1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0 2 VERSION = 6 !! 2 VERSION = 5 3 PATCHLEVEL = 12 !! 3 PATCHLEVEL = 14 4 SUBLEVEL = 0 !! 4 SUBLEVEL = 21 5 EXTRAVERSION = -rc7 !! 5 EXTRAVERSION = 6 NAME = Baby Opossum Posse !! 6 NAME = Opossums on Parade 7 7 8 # *DOCUMENTATION* 8 # *DOCUMENTATION* 9 # To see a list of typical targets execute "ma 9 # To see a list of typical targets execute "make help" 10 # More info can be located in ./README 10 # More info can be located in ./README 11 # Comments in this file are targeted only to t 11 # Comments in this file are targeted only to the developer, do not 12 # expect to learn how to build the kernel read 12 # expect to learn how to build the kernel reading this file. 13 13 14 ifeq ($(filter output-sync,$(.FEATURES)),) << 15 $(error GNU Make >= 4.0 is required. Your Make << 16 endif << 17 << 18 $(if $(filter __%, $(MAKECMDGOALS)), \ 14 $(if $(filter __%, $(MAKECMDGOALS)), \ 19 $(error targets prefixed with '__' are 15 $(error targets prefixed with '__' are only for internal use)) 20 16 21 # That's our default target when none is given 17 # That's our default target when none is given on the command line 22 PHONY := __all 18 PHONY := __all 23 __all: 19 __all: 24 20 25 # We are using a recursive build, so we need t 21 # We are using a recursive build, so we need to do a little thinking 26 # to get the ordering right. 22 # to get the ordering right. 27 # 23 # 28 # Most importantly: sub-Makefiles should only 24 # Most importantly: sub-Makefiles should only ever modify files in 29 # their own directory. If in some directory we 25 # their own directory. If in some directory we have a dependency on 30 # a file in another dir (which doesn't happen 26 # a file in another dir (which doesn't happen often, but it's often 31 # unavoidable when linking the built-in.a targ 27 # unavoidable when linking the built-in.a targets which finally 32 # turn into vmlinux), we will call a sub make 28 # turn into vmlinux), we will call a sub make in that other dir, and 33 # after that we are sure that everything which 29 # after that we are sure that everything which is in that other dir 34 # is now up to date. 30 # is now up to date. 35 # 31 # 36 # The only cases where we need to modify files 32 # The only cases where we need to modify files which have global 37 # effects are thus separated out and done befo 33 # effects are thus separated out and done before the recursive 38 # descending is started. They are now explicit 34 # descending is started. They are now explicitly listed as the 39 # prepare rule. 35 # prepare rule. 40 36 41 this-makefile := $(lastword $(MAKEFILE_LIST)) << 42 abs_srctree := $(realpath $(dir $(this-makefil << 43 abs_objtree := $(CURDIR) << 44 << 45 ifneq ($(sub_make_done),1) 37 ifneq ($(sub_make_done),1) 46 38 47 # Do not use make's built-in rules and variabl 39 # Do not use make's built-in rules and variables 48 # (this increases performance and avoids hard- 40 # (this increases performance and avoids hard-to-debug behaviour) 49 MAKEFLAGS += -rR 41 MAKEFLAGS += -rR 50 42 51 # Avoid funny character set dependencies 43 # Avoid funny character set dependencies 52 unexport LC_ALL 44 unexport LC_ALL 53 LC_COLLATE=C 45 LC_COLLATE=C 54 LC_NUMERIC=C 46 LC_NUMERIC=C 55 export LC_COLLATE LC_NUMERIC 47 export LC_COLLATE LC_NUMERIC 56 48 57 # Avoid interference with shell env settings 49 # Avoid interference with shell env settings 58 unexport GREP_OPTIONS 50 unexport GREP_OPTIONS 59 51 60 # Beautify output 52 # Beautify output 61 # -------------------------------------------- 53 # --------------------------------------------------------------------------- 62 # 54 # 63 # Most of build commands in Kbuild start with !! 55 # Normally, we echo the whole command before executing it. By making 64 # "quiet_cmd_*". If defined, the short log is !! 56 # that echo $($(quiet)$(cmd)), we now have the possibility to set 65 # that command is printed by default. !! 57 # $(quiet) to choose other forms of output instead, e.g. 66 # !! 58 # 67 # e.g.) !! 59 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ 68 # quiet_cmd_depmod = DEPMOD $(MODLIB) !! 60 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< 69 # cmd_depmod = $(srctree)/scripts/dep !! 61 # >> 62 # If $(quiet) is empty, the whole command will be printed. >> 63 # If it is set to "quiet_", only the short version will be printed. >> 64 # If it is set to "silent_", nothing will be printed at all, since >> 65 # the variable $(silent_cmd_cc_o_c) doesn't exist. 70 # 66 # 71 # A simple variant is to prefix commands with 67 # A simple variant is to prefix commands with $(Q) - that's useful 72 # for commands that shall be hidden in non-ver 68 # for commands that shall be hidden in non-verbose mode. 73 # 69 # 74 # $(Q)$(MAKE) $(build)=scripts/basic !! 70 # $(Q)ln $@ :< 75 # 71 # 76 # If KBUILD_VERBOSE contains 1, the whole comm !! 72 # If KBUILD_VERBOSE equals 0 then the above command will be hidden. 77 # If KBUILD_VERBOSE contains 2, the reason for !! 73 # If KBUILD_VERBOSE equals 1 then the above command is displayed. >> 74 # If KBUILD_VERBOSE equals 2 then give the reason why each target is rebuilt. 78 # 75 # 79 # To put more focus on warnings, be less verbo 76 # To put more focus on warnings, be less verbose as default 80 # Use 'make V=1' to see the full commands 77 # Use 'make V=1' to see the full commands 81 78 82 ifeq ("$(origin V)", "command line") 79 ifeq ("$(origin V)", "command line") 83 KBUILD_VERBOSE = $(V) 80 KBUILD_VERBOSE = $(V) 84 endif 81 endif >> 82 ifndef KBUILD_VERBOSE >> 83 KBUILD_VERBOSE = 0 >> 84 endif 85 85 86 quiet = quiet_ !! 86 ifeq ($(KBUILD_VERBOSE),1) 87 Q = @ << 88 << 89 ifneq ($(findstring 1, $(KBUILD_VERBOSE)),) << 90 quiet = 87 quiet = 91 Q = 88 Q = >> 89 else >> 90 quiet=quiet_ >> 91 Q = @ 92 endif 92 endif 93 93 94 # If the user is running make -s (silent mode) 94 # If the user is running make -s (silent mode), suppress echoing of 95 # commands 95 # commands 96 ifneq ($(findstring s,$(firstword -$(MAKEFLAGS !! 96 97 quiet=silent_ !! 97 ifneq ($(findstring s,$(filter-out --%,$(MAKEFLAGS))),) 98 override KBUILD_VERBOSE := !! 98 quiet=silent_ >> 99 KBUILD_VERBOSE = 0 99 endif 100 endif 100 101 101 export quiet Q KBUILD_VERBOSE 102 export quiet Q KBUILD_VERBOSE 102 103 103 # Call a source code checker (by default, "spa 104 # Call a source code checker (by default, "sparse") as part of the 104 # C compilation. 105 # C compilation. 105 # 106 # 106 # Use 'make C=1' to enable checking of only re 107 # Use 'make C=1' to enable checking of only re-compiled files. 107 # Use 'make C=2' to enable checking of *all* s 108 # Use 'make C=2' to enable checking of *all* source files, regardless 108 # of whether they are re-compiled or not. 109 # of whether they are re-compiled or not. 109 # 110 # 110 # See the file "Documentation/dev-tools/sparse 111 # See the file "Documentation/dev-tools/sparse.rst" for more details, 111 # including where to get the "sparse" utility. 112 # including where to get the "sparse" utility. 112 113 113 ifeq ("$(origin C)", "command line") 114 ifeq ("$(origin C)", "command line") 114 KBUILD_CHECKSRC = $(C) 115 KBUILD_CHECKSRC = $(C) 115 endif 116 endif 116 ifndef KBUILD_CHECKSRC 117 ifndef KBUILD_CHECKSRC 117 KBUILD_CHECKSRC = 0 118 KBUILD_CHECKSRC = 0 118 endif 119 endif 119 120 120 export KBUILD_CHECKSRC 121 export KBUILD_CHECKSRC 121 122 122 # Enable "clippy" (a linter) as part of the Ru << 123 # << 124 # Use 'make CLIPPY=1' to enable it. << 125 ifeq ("$(origin CLIPPY)", "command line") << 126 KBUILD_CLIPPY := $(CLIPPY) << 127 endif << 128 << 129 export KBUILD_CLIPPY << 130 << 131 # Use make M=dir or set the environment variab 123 # Use make M=dir or set the environment variable KBUILD_EXTMOD to specify the 132 # directory of external module to build. Setti 124 # directory of external module to build. Setting M= takes precedence. 133 ifeq ("$(origin M)", "command line") 125 ifeq ("$(origin M)", "command line") 134 KBUILD_EXTMOD := $(M) 126 KBUILD_EXTMOD := $(M) 135 endif 127 endif 136 128 137 $(if $(word 2, $(KBUILD_EXTMOD)), \ 129 $(if $(word 2, $(KBUILD_EXTMOD)), \ 138 $(error building multiple external mod 130 $(error building multiple external modules is not supported)) 139 131 140 $(foreach x, % :, $(if $(findstring $x, $(KBUI << 141 $(error module directory path cannot c << 142 << 143 # Remove trailing slashes 132 # Remove trailing slashes 144 ifneq ($(filter %/, $(KBUILD_EXTMOD)),) 133 ifneq ($(filter %/, $(KBUILD_EXTMOD)),) 145 KBUILD_EXTMOD := $(shell dirname $(KBUILD_EXTM 134 KBUILD_EXTMOD := $(shell dirname $(KBUILD_EXTMOD).) 146 endif 135 endif 147 136 148 export KBUILD_EXTMOD 137 export KBUILD_EXTMOD 149 138 150 # backward compatibility << 151 KBUILD_EXTRA_WARN ?= $(KBUILD_ENABLE_EXTRA_GCC << 152 << 153 ifeq ("$(origin W)", "command line") << 154 KBUILD_EXTRA_WARN := $(W) << 155 endif << 156 << 157 export KBUILD_EXTRA_WARN << 158 << 159 # Kbuild will save output files in the current 139 # Kbuild will save output files in the current working directory. 160 # This does not need to match to the root of t 140 # This does not need to match to the root of the kernel source tree. 161 # 141 # 162 # For example, you can do this: 142 # For example, you can do this: 163 # 143 # 164 # cd /dir/to/store/output/files; make -f /dir 144 # cd /dir/to/store/output/files; make -f /dir/to/kernel/source/Makefile 165 # 145 # 166 # If you want to save output files in a differ 146 # If you want to save output files in a different location, there are 167 # two syntaxes to specify it. 147 # two syntaxes to specify it. 168 # 148 # 169 # 1) O= 149 # 1) O= 170 # Use "make O=dir/to/store/output/files/" 150 # Use "make O=dir/to/store/output/files/" 171 # 151 # 172 # 2) Set KBUILD_OUTPUT 152 # 2) Set KBUILD_OUTPUT 173 # Set the environment variable KBUILD_OUTPUT t 153 # Set the environment variable KBUILD_OUTPUT to point to the output directory. 174 # export KBUILD_OUTPUT=dir/to/store/output/fil 154 # export KBUILD_OUTPUT=dir/to/store/output/files/; make 175 # 155 # 176 # The O= assignment takes precedence over the 156 # The O= assignment takes precedence over the KBUILD_OUTPUT environment 177 # variable. 157 # variable. 178 158 179 # Do we want to change the working directory? 159 # Do we want to change the working directory? 180 ifeq ("$(origin O)", "command line") 160 ifeq ("$(origin O)", "command line") 181 KBUILD_OUTPUT := $(O) 161 KBUILD_OUTPUT := $(O) 182 endif 162 endif 183 163 184 ifneq ($(KBUILD_OUTPUT),) 164 ifneq ($(KBUILD_OUTPUT),) 185 # $(realpath ...) gets empty if the path does !! 165 # Make's built-in functions such as $(abspath ...), $(realpath ...) cannot 186 $(shell mkdir -p "$(KBUILD_OUTPUT)") !! 166 # expand a shell special character '~'. We use a somewhat tedious way here. >> 167 abs_objtree := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) && pwd) >> 168 $(if $(abs_objtree),, \ >> 169 $(error failed to create output directory "$(KBUILD_OUTPUT)")) >> 170 187 # $(realpath ...) resolves symlinks 171 # $(realpath ...) resolves symlinks 188 abs_objtree := $(realpath $(KBUILD_OUTPUT)) !! 172 abs_objtree := $(realpath $(abs_objtree)) 189 $(if $(abs_objtree),,$(error failed to create !! 173 else >> 174 abs_objtree := $(CURDIR) 190 endif # ifneq ($(KBUILD_OUTPUT),) 175 endif # ifneq ($(KBUILD_OUTPUT),) 191 176 192 ifneq ($(words $(subst :, ,$(abs_srctree))), 1 !! 177 ifeq ($(abs_objtree),$(CURDIR)) 193 $(error source directory cannot contain spaces !! 178 # Suppress "Entering directory ..." unless we are changing the work directory. >> 179 MAKEFLAGS += --no-print-directory >> 180 else >> 181 need-sub-make := 1 194 endif 182 endif 195 183 196 export sub_make_done := 1 !! 184 this-makefile := $(lastword $(MAKEFILE_LIST)) >> 185 abs_srctree := $(realpath $(dir $(this-makefile))) 197 186 198 endif # sub_make_done !! 187 ifneq ($(words $(subst :, ,$(abs_srctree))), 1) >> 188 $(error source directory cannot contain spaces or colons) >> 189 endif 199 190 200 ifeq ($(abs_objtree),$(CURDIR)) !! 191 ifneq ($(abs_srctree),$(abs_objtree)) 201 # Suppress "Entering directory ..." if we are !! 192 # Look for make include files relative to root of kernel src 202 no-print-directory := --no-print-directory !! 193 # 203 else !! 194 # This does not become effective immediately because MAKEFLAGS is re-parsed 204 # Recursion to show "Entering directory ..." !! 195 # once after the Makefile is read. We need to invoke sub-make. >> 196 MAKEFLAGS += --include-dir=$(abs_srctree) 205 need-sub-make := 1 197 need-sub-make := 1 206 endif 198 endif 207 199 208 ifeq ($(filter --no-print-directory, $(MAKEFLA !! 200 ifneq ($(filter 3.%,$(MAKE_VERSION)),) 209 # If --no-print-directory is unset, recurse on !! 201 # 'MAKEFLAGS += -rR' does not immediately become effective for GNU Make 3.x 210 # You may end up recursing into __sub-make twi !! 202 # We need to invoke sub-make to avoid implicit rules in the top Makefile. 211 # behavior change in GNU Make 4.4.1. << 212 need-sub-make := 1 203 need-sub-make := 1 >> 204 # Cancel implicit rules for this Makefile. >> 205 $(this-makefile): ; 213 endif 206 endif 214 207 >> 208 export abs_srctree abs_objtree >> 209 export sub_make_done := 1 >> 210 215 ifeq ($(need-sub-make),1) 211 ifeq ($(need-sub-make),1) 216 212 217 PHONY += $(MAKECMDGOALS) __sub-make 213 PHONY += $(MAKECMDGOALS) __sub-make 218 214 219 $(filter-out $(this-makefile), $(MAKECMDGOALS) 215 $(filter-out $(this-makefile), $(MAKECMDGOALS)) __all: __sub-make 220 @: 216 @: 221 217 222 # Invoke a second make in the output directory 218 # Invoke a second make in the output directory, passing relevant variables 223 __sub-make: 219 __sub-make: 224 $(Q)$(MAKE) $(no-print-directory) -C $ !! 220 $(Q)$(MAKE) -C $(abs_objtree) -f $(abs_srctree)/Makefile $(MAKECMDGOALS) 225 -f $(abs_srctree)/Makefile $(MAKECMDGO << 226 221 227 else # need-sub-make !! 222 endif # need-sub-make >> 223 endif # sub_make_done 228 224 229 # We process the rest of the Makefile if this 225 # We process the rest of the Makefile if this is the final invocation of make >> 226 ifeq ($(need-sub-make),) >> 227 >> 228 # Do not print "Entering directory ...", >> 229 # but we want to display it when entering to the output directory >> 230 # so that IDEs/editors are able to understand relative filenames. >> 231 MAKEFLAGS += --no-print-directory 230 232 231 ifeq ($(abs_srctree),$(abs_objtree)) 233 ifeq ($(abs_srctree),$(abs_objtree)) 232 # building in the source tree 234 # building in the source tree 233 srctree := . 235 srctree := . 234 building_out_of_srctree := 236 building_out_of_srctree := 235 else 237 else 236 ifeq ($(abs_srctree)/,$(dir $(abs_objt 238 ifeq ($(abs_srctree)/,$(dir $(abs_objtree))) 237 # building in a subdirectory o 239 # building in a subdirectory of the source tree 238 srctree := .. 240 srctree := .. 239 else 241 else 240 srctree := $(abs_srctree) 242 srctree := $(abs_srctree) 241 endif 243 endif 242 building_out_of_srctree := 1 244 building_out_of_srctree := 1 243 endif 245 endif 244 246 245 ifneq ($(KBUILD_ABS_SRCTREE),) 247 ifneq ($(KBUILD_ABS_SRCTREE),) 246 srctree := $(abs_srctree) 248 srctree := $(abs_srctree) 247 endif 249 endif 248 250 249 objtree := . 251 objtree := . 250 << 251 VPATH := << 252 << 253 ifeq ($(KBUILD_EXTMOD),) << 254 ifdef building_out_of_srctree << 255 VPATH := $(srctree) 252 VPATH := $(srctree) 256 endif << 257 endif << 258 253 259 export building_out_of_srctree srctree objtree 254 export building_out_of_srctree srctree objtree VPATH 260 255 261 # To make sure we do not include .config for a 256 # To make sure we do not include .config for any of the *config targets 262 # catch them early, and hand them over to scri 257 # catch them early, and hand them over to scripts/kconfig/Makefile 263 # It is allowed to specify more targets when c 258 # It is allowed to specify more targets when calling make, including 264 # mixing *config targets and build targets. 259 # mixing *config targets and build targets. 265 # For example 'make oldconfig all'. 260 # For example 'make oldconfig all'. 266 # Detect when mixed targets is specified, and 261 # Detect when mixed targets is specified, and make a second invocation 267 # of make so .config is not included in this c 262 # of make so .config is not included in this case either (for *config). 268 263 269 version_h := include/generated/uapi/linux/vers 264 version_h := include/generated/uapi/linux/version.h 270 265 271 clean-targets := %clean mrproper cleandocs 266 clean-targets := %clean mrproper cleandocs 272 no-dot-config-targets := $(clean-targets) \ 267 no-dot-config-targets := $(clean-targets) \ 273 cscope gtags TAGS tag 268 cscope gtags TAGS tags help% %docs check% coccicheck \ 274 $(version_h) headers 269 $(version_h) headers headers_% archheaders archscripts \ 275 %asm-generic kernelve 270 %asm-generic kernelversion %src-pkg dt_binding_check \ 276 outputmakefile rustav !! 271 outputmakefile 277 no-sync-config-targets := $(no-dot-config-targ !! 272 # Installation targets should not require compiler. Unfortunately, vdso_install >> 273 # is an exception where build artifacts may be updated. This must be fixed. >> 274 no-compiler-targets := $(no-dot-config-targets) install dtbs_install \ >> 275 headers_install modules_install kernelrelease image_name >> 276 no-sync-config-targets := $(no-dot-config-targets) %install kernelrelease \ 278 image_name 277 image_name 279 single-targets := %.a %.i %.ko %.lds %.ll %.ls !! 278 single-targets := %.a %.i %.ko %.lds %.ll %.lst %.mod %.o %.s %.symtypes %/ 280 279 281 config-build := 280 config-build := 282 mixed-build := 281 mixed-build := 283 need-config := 1 282 need-config := 1 >> 283 need-compiler := 1 284 may-sync-config := 1 284 may-sync-config := 1 285 single-build := 285 single-build := 286 286 287 ifneq ($(filter $(no-dot-config-targets), $(MA 287 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 288 ifeq ($(filter-out $(no-dot-config-targets !! 288 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 289 need-config := !! 289 need-config := 290 endif !! 290 endif 291 endif 291 endif 292 292 293 ifneq ($(filter $(no-sync-config-targets), $(M !! 293 ifneq ($(filter $(no-compiler-targets), $(MAKECMDGOALS)),) 294 ifeq ($(filter-out $(no-sync-config-target !! 294 ifeq ($(filter-out $(no-compiler-targets), $(MAKECMDGOALS)),) 295 may-sync-config := !! 295 need-compiler := 296 endif !! 296 endif 297 endif 297 endif 298 298 299 need-compiler := $(may-sync-config) !! 299 ifneq ($(filter $(no-sync-config-targets), $(MAKECMDGOALS)),) >> 300 ifeq ($(filter-out $(no-sync-config-targets), $(MAKECMDGOALS)),) >> 301 may-sync-config := >> 302 endif >> 303 endif 300 304 301 ifneq ($(KBUILD_EXTMOD),) 305 ifneq ($(KBUILD_EXTMOD),) 302 may-sync-config := !! 306 may-sync-config := 303 endif 307 endif 304 308 305 ifeq ($(KBUILD_EXTMOD),) 309 ifeq ($(KBUILD_EXTMOD),) 306 ifneq ($(filter %config,$(MAKECMDGOALS)),) !! 310 ifneq ($(filter %config,$(MAKECMDGOALS)),) 307 config-build := 1 !! 311 config-build := 1 308 ifneq ($(words $(MAKECMDGOALS)),1) !! 312 ifneq ($(words $(MAKECMDGOALS)),1) 309 mixed-build := 1 !! 313 mixed-build := 1 >> 314 endif 310 endif 315 endif 311 endif << 312 endif 316 endif 313 317 314 # We cannot build single targets and the other 318 # We cannot build single targets and the others at the same time 315 ifneq ($(filter $(single-targets), $(MAKECMDGO 319 ifneq ($(filter $(single-targets), $(MAKECMDGOALS)),) 316 single-build := 1 !! 320 single-build := 1 317 ifneq ($(filter-out $(single-targets), $(M !! 321 ifneq ($(filter-out $(single-targets), $(MAKECMDGOALS)),) 318 mixed-build := 1 !! 322 mixed-build := 1 319 endif !! 323 endif 320 endif 324 endif 321 325 322 # For "make -j clean all", "make -j mrproper d 326 # For "make -j clean all", "make -j mrproper defconfig all", etc. 323 ifneq ($(filter $(clean-targets),$(MAKECMDGOAL 327 ifneq ($(filter $(clean-targets),$(MAKECMDGOALS)),) 324 ifneq ($(filter-out $(clean-targets),$(MAK !! 328 ifneq ($(filter-out $(clean-targets),$(MAKECMDGOALS)),) 325 mixed-build := 1 !! 329 mixed-build := 1 326 endif !! 330 endif 327 endif 331 endif 328 332 329 # install and modules_install need also be pro 333 # install and modules_install need also be processed one by one 330 ifneq ($(filter install,$(MAKECMDGOALS)),) 334 ifneq ($(filter install,$(MAKECMDGOALS)),) 331 ifneq ($(filter modules_install,$(MAKECMDG !! 335 ifneq ($(filter modules_install,$(MAKECMDGOALS)),) 332 mixed-build := 1 !! 336 mixed-build := 1 333 endif !! 337 endif 334 endif 338 endif 335 339 336 ifdef mixed-build 340 ifdef mixed-build 337 # ============================================ 341 # =========================================================================== 338 # We're called with mixed targets (*config and 342 # We're called with mixed targets (*config and build targets). 339 # Handle them one by one. 343 # Handle them one by one. 340 344 341 PHONY += $(MAKECMDGOALS) __build_one_by_one 345 PHONY += $(MAKECMDGOALS) __build_one_by_one 342 346 343 $(MAKECMDGOALS): __build_one_by_one 347 $(MAKECMDGOALS): __build_one_by_one 344 @: 348 @: 345 349 346 __build_one_by_one: 350 __build_one_by_one: 347 $(Q)set -e; \ 351 $(Q)set -e; \ 348 for i in $(MAKECMDGOALS); do \ 352 for i in $(MAKECMDGOALS); do \ 349 $(MAKE) -f $(srctree)/Makefile 353 $(MAKE) -f $(srctree)/Makefile $$i; \ 350 done 354 done 351 355 352 else # !mixed-build 356 else # !mixed-build 353 357 354 include $(srctree)/scripts/Kbuild.include 358 include $(srctree)/scripts/Kbuild.include 355 359 356 # Read KERNELRELEASE from include/config/kerne 360 # Read KERNELRELEASE from include/config/kernel.release (if it exists) 357 KERNELRELEASE = $(call read-file, include/conf !! 361 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) 358 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),. 362 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) 359 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEA 363 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 360 364 361 include $(srctree)/scripts/subarch.include 365 include $(srctree)/scripts/subarch.include 362 366 363 # Cross compiling and selecting different set 367 # Cross compiling and selecting different set of gcc/bin-utils 364 # -------------------------------------------- 368 # --------------------------------------------------------------------------- 365 # 369 # 366 # When performing cross compilation for other 370 # When performing cross compilation for other architectures ARCH shall be set 367 # to the target architecture. (See arch/* for 371 # to the target architecture. (See arch/* for the possibilities). 368 # ARCH can be set during invocation of make: 372 # ARCH can be set during invocation of make: 369 # make ARCH=arm64 !! 373 # make ARCH=ia64 370 # Another way is to have ARCH set in the envir 374 # Another way is to have ARCH set in the environment. 371 # The default ARCH is the host where make is e 375 # The default ARCH is the host where make is executed. 372 376 373 # CROSS_COMPILE specify the prefix used for al 377 # CROSS_COMPILE specify the prefix used for all executables used 374 # during compilation. Only gcc and related bin 378 # during compilation. Only gcc and related bin-utils executables 375 # are prefixed with $(CROSS_COMPILE). 379 # are prefixed with $(CROSS_COMPILE). 376 # CROSS_COMPILE can be set on the command line 380 # CROSS_COMPILE can be set on the command line 377 # make CROSS_COMPILE=aarch64-linux-gnu- !! 381 # make CROSS_COMPILE=ia64-linux- 378 # Alternatively CROSS_COMPILE can be set in th 382 # Alternatively CROSS_COMPILE can be set in the environment. 379 # Default value for CROSS_COMPILE is not to pr 383 # Default value for CROSS_COMPILE is not to prefix executables 380 # Note: Some architectures assign CROSS_COMPIL 384 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 381 ARCH ?= $(SUBARCH) 385 ARCH ?= $(SUBARCH) 382 386 383 # Architecture as present in compile.h 387 # Architecture as present in compile.h 384 UTS_MACHINE := $(ARCH) 388 UTS_MACHINE := $(ARCH) 385 SRCARCH := $(ARCH) 389 SRCARCH := $(ARCH) 386 390 387 # Additional ARCH settings for x86 391 # Additional ARCH settings for x86 388 ifeq ($(ARCH),i386) 392 ifeq ($(ARCH),i386) 389 SRCARCH := x86 393 SRCARCH := x86 390 endif 394 endif 391 ifeq ($(ARCH),x86_64) 395 ifeq ($(ARCH),x86_64) 392 SRCARCH := x86 396 SRCARCH := x86 393 endif 397 endif 394 398 395 # Additional ARCH settings for sparc 399 # Additional ARCH settings for sparc 396 ifeq ($(ARCH),sparc32) 400 ifeq ($(ARCH),sparc32) 397 SRCARCH := sparc 401 SRCARCH := sparc 398 endif 402 endif 399 ifeq ($(ARCH),sparc64) 403 ifeq ($(ARCH),sparc64) 400 SRCARCH := sparc 404 SRCARCH := sparc 401 endif 405 endif 402 406 403 # Additional ARCH settings for parisc 407 # Additional ARCH settings for parisc 404 ifeq ($(ARCH),parisc64) 408 ifeq ($(ARCH),parisc64) 405 SRCARCH := parisc 409 SRCARCH := parisc 406 endif 410 endif 407 411 408 export cross_compiling := 412 export cross_compiling := 409 ifneq ($(SRCARCH),$(SUBARCH)) 413 ifneq ($(SRCARCH),$(SUBARCH)) 410 cross_compiling := 1 414 cross_compiling := 1 411 endif 415 endif 412 416 413 KCONFIG_CONFIG ?= .config 417 KCONFIG_CONFIG ?= .config 414 export KCONFIG_CONFIG 418 export KCONFIG_CONFIG 415 419 416 # SHELL used by kbuild 420 # SHELL used by kbuild 417 CONFIG_SHELL := sh 421 CONFIG_SHELL := sh 418 422 419 HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS 423 HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS 2>/dev/null) 420 HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAG 424 HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAGS 2>/dev/null) 421 HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/d 425 HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/dev/null) 422 426 423 ifneq ($(LLVM),) 427 ifneq ($(LLVM),) 424 ifneq ($(filter %/,$(LLVM)),) !! 428 HOSTCC = clang 425 LLVM_PREFIX := $(LLVM) !! 429 HOSTCXX = clang++ 426 else ifneq ($(filter -%,$(LLVM)),) << 427 LLVM_SUFFIX := $(LLVM) << 428 endif << 429 << 430 HOSTCC = $(LLVM_PREFIX)clang$(LLVM_SUFFIX) << 431 HOSTCXX = $(LLVM_PREFIX)clang++$(LLVM_SUFFIX) << 432 else 430 else 433 HOSTCC = gcc 431 HOSTCC = gcc 434 HOSTCXX = g++ 432 HOSTCXX = g++ 435 endif 433 endif 436 HOSTRUSTC = rustc << 437 HOSTPKG_CONFIG = pkg-config << 438 434 439 KBUILD_USERHOSTCFLAGS := -Wall -Wmissing-proto !! 435 export KBUILD_USERCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes \ 440 -O2 -fomit-frame-poin !! 436 -O2 -fomit-frame-pointer -std=gnu89 441 KBUILD_USERCFLAGS := $(KBUILD_USERHOSTCFLAGS) !! 437 export KBUILD_USERLDFLAGS := 442 KBUILD_USERLDFLAGS := $(USERLDFLAGS) !! 438 443 !! 439 KBUILD_HOSTCFLAGS := $(KBUILD_USERCFLAGS) $(HOST_LFS_CFLAGS) $(HOSTCFLAGS) 444 # These flags apply to all Rust code in the tr !! 440 KBUILD_HOSTCXXFLAGS := -Wall -O2 $(HOST_LFS_CFLAGS) $(HOSTCXXFLAGS) 445 # host programs. << 446 export rust_common_flags := --edition=2021 \ << 447 -Zbinary_dep_depin << 448 -Astable_features << 449 -Dunsafe_op_in_uns << 450 -Dnon_ascii_idents << 451 -Wrust_2018_idioms << 452 -Wunreachable_pub << 453 -Wmissing_docs \ << 454 -Wrustdoc::missing << 455 -Wclippy::all \ << 456 -Wclippy::mut_mut << 457 -Wclippy::needless << 458 -Wclippy::needless << 459 -Wclippy::no_mangl << 460 -Wclippy::dbg_macr << 461 << 462 KBUILD_HOSTCFLAGS := $(KBUILD_USERHOSTCFLAGS << 463 $(HOSTCFLAGS) -I $(srct << 464 KBUILD_HOSTCXXFLAGS := -Wall -O2 $(HOST_LFS_CF << 465 -I $(srctree)/scripts/i << 466 KBUILD_HOSTRUSTFLAGS := $(rust_common_flags) - << 467 -Zallow-features= $(HO << 468 KBUILD_HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) $(H 441 KBUILD_HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) $(HOSTLDFLAGS) 469 KBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOST 442 KBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOSTLDLIBS) 470 443 471 # Make variables (CC, etc...) 444 # Make variables (CC, etc...) 472 CPP = $(CC) -E 445 CPP = $(CC) -E 473 ifneq ($(LLVM),) 446 ifneq ($(LLVM),) 474 CC = $(LLVM_PREFIX)clang$(LLVM_SU !! 447 CC = clang 475 LD = $(LLVM_PREFIX)ld.lld$(LLVM_S !! 448 LD = ld.lld 476 AR = $(LLVM_PREFIX)llvm-ar$(LLVM_ !! 449 AR = llvm-ar 477 NM = $(LLVM_PREFIX)llvm-nm$(LLVM_ !! 450 NM = llvm-nm 478 OBJCOPY = $(LLVM_PREFIX)llvm-objcopy$( !! 451 OBJCOPY = llvm-objcopy 479 OBJDUMP = $(LLVM_PREFIX)llvm-objdump$( !! 452 OBJDUMP = llvm-objdump 480 READELF = $(LLVM_PREFIX)llvm-readelf$( !! 453 READELF = llvm-readelf 481 STRIP = $(LLVM_PREFIX)llvm-strip$(LL !! 454 STRIP = llvm-strip 482 else 455 else 483 CC = $(CROSS_COMPILE)gcc 456 CC = $(CROSS_COMPILE)gcc 484 LD = $(CROSS_COMPILE)ld 457 LD = $(CROSS_COMPILE)ld 485 AR = $(CROSS_COMPILE)ar 458 AR = $(CROSS_COMPILE)ar 486 NM = $(CROSS_COMPILE)nm 459 NM = $(CROSS_COMPILE)nm 487 OBJCOPY = $(CROSS_COMPILE)objcopy 460 OBJCOPY = $(CROSS_COMPILE)objcopy 488 OBJDUMP = $(CROSS_COMPILE)objdump 461 OBJDUMP = $(CROSS_COMPILE)objdump 489 READELF = $(CROSS_COMPILE)readelf 462 READELF = $(CROSS_COMPILE)readelf 490 STRIP = $(CROSS_COMPILE)strip 463 STRIP = $(CROSS_COMPILE)strip 491 endif 464 endif 492 RUSTC = rustc << 493 RUSTDOC = rustdoc << 494 RUSTFMT = rustfmt << 495 CLIPPY_DRIVER = clippy-driver << 496 BINDGEN = bindgen << 497 PAHOLE = pahole 465 PAHOLE = pahole 498 RESOLVE_BTFIDS = $(objtree)/tools/bpf/resolve 466 RESOLVE_BTFIDS = $(objtree)/tools/bpf/resolve_btfids/resolve_btfids 499 LEX = flex 467 LEX = flex 500 YACC = bison 468 YACC = bison 501 AWK = awk 469 AWK = awk 502 INSTALLKERNEL := installkernel 470 INSTALLKERNEL := installkernel >> 471 DEPMOD = depmod 503 PERL = perl 472 PERL = perl 504 PYTHON3 = python3 473 PYTHON3 = python3 505 CHECK = sparse 474 CHECK = sparse 506 BASH = bash 475 BASH = bash 507 KGZIP = gzip 476 KGZIP = gzip 508 KBZIP2 = bzip2 477 KBZIP2 = bzip2 509 KLZOP = lzop 478 KLZOP = lzop 510 LZMA = lzma 479 LZMA = lzma 511 LZ4 = lz4c 480 LZ4 = lz4c 512 XZ = xz 481 XZ = xz 513 ZSTD = zstd 482 ZSTD = zstd 514 483 515 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC 484 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ 516 -Wbitwise -Wno-return-void - 485 -Wbitwise -Wno-return-void -Wno-unknown-attribute $(CF) 517 NOSTDINC_FLAGS := 486 NOSTDINC_FLAGS := 518 CFLAGS_MODULE = 487 CFLAGS_MODULE = 519 RUSTFLAGS_MODULE = << 520 AFLAGS_MODULE = 488 AFLAGS_MODULE = 521 LDFLAGS_MODULE = 489 LDFLAGS_MODULE = 522 CFLAGS_KERNEL = 490 CFLAGS_KERNEL = 523 RUSTFLAGS_KERNEL = << 524 AFLAGS_KERNEL = 491 AFLAGS_KERNEL = 525 LDFLAGS_vmlinux = 492 LDFLAGS_vmlinux = 526 493 527 # Use USERINCLUDE when you must reference the 494 # Use USERINCLUDE when you must reference the UAPI directories only. 528 USERINCLUDE := \ 495 USERINCLUDE := \ 529 -I$(srctree)/arch/$(SRCARCH)/i 496 -I$(srctree)/arch/$(SRCARCH)/include/uapi \ 530 -I$(objtree)/arch/$(SRCARCH)/i 497 -I$(objtree)/arch/$(SRCARCH)/include/generated/uapi \ 531 -I$(srctree)/include/uapi \ 498 -I$(srctree)/include/uapi \ 532 -I$(objtree)/include/generated 499 -I$(objtree)/include/generated/uapi \ 533 -include $(srctree)/include/li 500 -include $(srctree)/include/linux/compiler-version.h \ 534 -include $(srctree)/include/li 501 -include $(srctree)/include/linux/kconfig.h 535 502 536 # Use LINUXINCLUDE when you must reference the 503 # Use LINUXINCLUDE when you must reference the include/ directory. 537 # Needed to be compatible with the O= option 504 # Needed to be compatible with the O= option 538 LINUXINCLUDE := \ 505 LINUXINCLUDE := \ 539 -I$(srctree)/arch/$(SRCARCH)/i 506 -I$(srctree)/arch/$(SRCARCH)/include \ 540 -I$(objtree)/arch/$(SRCARCH)/i 507 -I$(objtree)/arch/$(SRCARCH)/include/generated \ 541 $(if $(building_out_of_srctree 508 $(if $(building_out_of_srctree),-I$(srctree)/include) \ 542 -I$(objtree)/include \ 509 -I$(objtree)/include \ 543 $(USERINCLUDE) 510 $(USERINCLUDE) 544 511 545 KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE 512 KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE 546 !! 513 KBUILD_CFLAGS := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \ 547 KBUILD_CFLAGS := !! 514 -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE \ 548 KBUILD_CFLAGS += -std=gnu11 !! 515 -Werror=implicit-function-declaration -Werror=implicit-int \ 549 KBUILD_CFLAGS += -fshort-wchar !! 516 -Werror=return-type -Wno-format-security \ 550 KBUILD_CFLAGS += -funsigned-char !! 517 -std=gnu89 551 KBUILD_CFLAGS += -fno-common << 552 KBUILD_CFLAGS += -fno-PIE << 553 KBUILD_CFLAGS += -fno-strict-aliasing << 554 << 555 KBUILD_CPPFLAGS := -D__KERNEL__ 518 KBUILD_CPPFLAGS := -D__KERNEL__ 556 KBUILD_RUSTFLAGS := $(rust_common_flags) \ << 557 -Cpanic=abort -Cembed-bitc << 558 -Cforce-unwind-tables=n -C << 559 -Csymbol-mangling-version= << 560 -Crelocation-model=static << 561 -Zfunction-sections=n \ << 562 -Wclippy::float_arithmetic << 563 << 564 KBUILD_AFLAGS_KERNEL := 519 KBUILD_AFLAGS_KERNEL := 565 KBUILD_CFLAGS_KERNEL := 520 KBUILD_CFLAGS_KERNEL := 566 KBUILD_RUSTFLAGS_KERNEL := << 567 KBUILD_AFLAGS_MODULE := -DMODULE 521 KBUILD_AFLAGS_MODULE := -DMODULE 568 KBUILD_CFLAGS_MODULE := -DMODULE 522 KBUILD_CFLAGS_MODULE := -DMODULE 569 KBUILD_RUSTFLAGS_MODULE := --cfg MODULE << 570 KBUILD_LDFLAGS_MODULE := 523 KBUILD_LDFLAGS_MODULE := 571 KBUILD_LDFLAGS := 524 KBUILD_LDFLAGS := 572 CLANG_FLAGS := 525 CLANG_FLAGS := 573 526 574 ifeq ($(KBUILD_CLIPPY),1) !! 527 export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE LD CC 575 RUSTC_OR_CLIPPY_QUIET := CLIPPY << 576 RUSTC_OR_CLIPPY = $(CLIPPY_DRIVER) << 577 else << 578 RUSTC_OR_CLIPPY_QUIET := RUSTC << 579 RUSTC_OR_CLIPPY = $(RUSTC) << 580 endif << 581 << 582 # Allows the usage of unstable features in sta << 583 export RUSTC_BOOTSTRAP := 1 << 584 << 585 export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC K << 586 export RUSTC RUSTDOC RUSTFMT RUSTC_OR_CLIPPY_Q << 587 export HOSTRUSTC KBUILD_HOSTRUSTFLAGS << 588 export CPP AR NM STRIP OBJCOPY OBJDUMP READELF 528 export CPP AR NM STRIP OBJCOPY OBJDUMP READELF PAHOLE RESOLVE_BTFIDS LEX YACC AWK INSTALLKERNEL 589 export PERL PYTHON3 CHECK CHECKFLAGS MAKE UTS_ 529 export PERL PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX 590 export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ ZSTD 530 export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ ZSTD 591 export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS 531 export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE 592 export KBUILD_USERCFLAGS KBUILD_USERLDFLAGS << 593 532 594 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINC 533 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS KBUILD_LDFLAGS 595 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODU 534 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE 596 export KBUILD_RUSTFLAGS RUSTFLAGS_KERNEL RUSTF << 597 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODU 535 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 598 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODU !! 536 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE 599 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERN !! 537 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL 600 538 601 # Files to ignore in find ... statements 539 # Files to ignore in find ... statements 602 540 603 export RCS_FIND_IGNORE := \( -name SCCS -o -na 541 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ 604 -name CVS -o -name . 542 -name CVS -o -name .pc -o -name .hg -o -name .git \) \ 605 -prune -o 543 -prune -o >> 544 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ >> 545 --exclude CVS --exclude .pc --exclude .hg --exclude .git 606 546 607 # ============================================ 547 # =========================================================================== 608 # Rules shared between *config targets and bui 548 # Rules shared between *config targets and build targets 609 549 610 # Basic helpers built in scripts/basic/ 550 # Basic helpers built in scripts/basic/ 611 PHONY += scripts_basic 551 PHONY += scripts_basic 612 scripts_basic: 552 scripts_basic: 613 $(Q)$(MAKE) $(build)=scripts/basic 553 $(Q)$(MAKE) $(build)=scripts/basic 614 554 615 PHONY += outputmakefile 555 PHONY += outputmakefile 616 ifdef building_out_of_srctree 556 ifdef building_out_of_srctree 617 # Before starting out-of-tree build, make sure 557 # Before starting out-of-tree build, make sure the source tree is clean. 618 # outputmakefile generates a Makefile in the o 558 # outputmakefile generates a Makefile in the output directory, if using a 619 # separate output directory. This allows conve 559 # separate output directory. This allows convenient use of make in the 620 # output directory. 560 # output directory. 621 # At the same time when output Makefile genera 561 # At the same time when output Makefile generated, generate .gitignore to 622 # ignore whole output directory 562 # ignore whole output directory 623 563 624 quiet_cmd_makefile = GEN Makefile 564 quiet_cmd_makefile = GEN Makefile 625 cmd_makefile = { \ 565 cmd_makefile = { \ 626 echo "\# Automatically generated by $( 566 echo "\# Automatically generated by $(srctree)/Makefile: don't edit"; \ 627 echo "include $(srctree)/Makefile"; \ 567 echo "include $(srctree)/Makefile"; \ 628 } > Makefile 568 } > Makefile 629 569 630 outputmakefile: 570 outputmakefile: 631 @if [ -f $(srctree)/.config -o \ !! 571 $(Q)if [ -f $(srctree)/.config -o \ 632 -d $(srctree)/include/config 572 -d $(srctree)/include/config -o \ 633 -d $(srctree)/arch/$(SRCARCH) 573 -d $(srctree)/arch/$(SRCARCH)/include/generated ]; then \ 634 echo >&2 "***"; \ 574 echo >&2 "***"; \ 635 echo >&2 "*** The source tree 575 echo >&2 "*** The source tree is not clean, please run 'make$(if $(findstring command line, $(origin ARCH)), ARCH=$(ARCH)) mrproper'"; \ 636 echo >&2 "*** in $(abs_srctree 576 echo >&2 "*** in $(abs_srctree)";\ 637 echo >&2 "***"; \ 577 echo >&2 "***"; \ 638 false; \ 578 false; \ 639 fi 579 fi 640 $(Q)ln -fsn $(srctree) source 580 $(Q)ln -fsn $(srctree) source 641 $(call cmd,makefile) 581 $(call cmd,makefile) 642 $(Q)test -e .gitignore || \ 582 $(Q)test -e .gitignore || \ 643 { echo "# this is build directory, ign 583 { echo "# this is build directory, ignore it"; echo "*"; } > .gitignore 644 endif 584 endif 645 585 646 # The expansion should be delayed until arch/$ 586 # The expansion should be delayed until arch/$(SRCARCH)/Makefile is included. 647 # Some architectures define CROSS_COMPILE in a 587 # Some architectures define CROSS_COMPILE in arch/$(SRCARCH)/Makefile. 648 # CC_VERSION_TEXT and RUSTC_VERSION_TEXT are r !! 588 # CC_VERSION_TEXT is referenced from Kconfig (so it needs export), 649 # need export), and from include/config/auto.c !! 589 # and from include/config/auto.conf.cmd to detect the compiler upgrade. 650 # upgrade. !! 590 CC_VERSION_TEXT = $(subst $(pound),,$(shell $(CC) --version 2>/dev/null | head -n 1)) 651 CC_VERSION_TEXT = $(subst $(pound),,$(shell LC << 652 RUSTC_VERSION_TEXT = $(subst $(pound),,$(shell << 653 591 654 ifneq ($(findstring clang,$(CC_VERSION_TEXT)), 592 ifneq ($(findstring clang,$(CC_VERSION_TEXT)),) 655 include $(srctree)/scripts/Makefile.clang !! 593 ifneq ($(CROSS_COMPILE),) >> 594 CLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%)) >> 595 endif >> 596 ifeq ($(LLVM_IAS),1) >> 597 CLANG_FLAGS += -integrated-as >> 598 else >> 599 CLANG_FLAGS += -no-integrated-as >> 600 GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit)) >> 601 CLANG_FLAGS += --prefix=$(GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE)) >> 602 endif >> 603 CLANG_FLAGS += -Werror=unknown-warning-option >> 604 KBUILD_CFLAGS += $(CLANG_FLAGS) >> 605 KBUILD_AFLAGS += $(CLANG_FLAGS) >> 606 export CLANG_FLAGS 656 endif 607 endif 657 608 658 # Include this also for config targets because 609 # Include this also for config targets because some architectures need 659 # cc-cross-prefix to determine CROSS_COMPILE. 610 # cc-cross-prefix to determine CROSS_COMPILE. 660 ifdef need-compiler 611 ifdef need-compiler 661 include $(srctree)/scripts/Makefile.compiler 612 include $(srctree)/scripts/Makefile.compiler 662 endif 613 endif 663 614 664 ifdef config-build 615 ifdef config-build 665 # ============================================ 616 # =========================================================================== 666 # *config targets only - make sure prerequisit 617 # *config targets only - make sure prerequisites are updated, and descend 667 # in scripts/kconfig to make the *config targe 618 # in scripts/kconfig to make the *config target 668 619 669 # Read arch-specific Makefile to set KBUILD_DE !! 620 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 670 # KBUILD_DEFCONFIG may point out an alternativ 621 # KBUILD_DEFCONFIG may point out an alternative default configuration 671 # used for 'make defconfig' 622 # used for 'make defconfig' 672 include $(srctree)/arch/$(SRCARCH)/Makefile 623 include $(srctree)/arch/$(SRCARCH)/Makefile 673 export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERS !! 624 export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERSION_TEXT 674 625 675 config: outputmakefile scripts_basic FORCE 626 config: outputmakefile scripts_basic FORCE 676 $(Q)$(MAKE) $(build)=scripts/kconfig $ 627 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 677 628 678 %config: outputmakefile scripts_basic FORCE 629 %config: outputmakefile scripts_basic FORCE 679 $(Q)$(MAKE) $(build)=scripts/kconfig $ 630 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 680 631 681 else #!config-build 632 else #!config-build 682 # ============================================ 633 # =========================================================================== 683 # Build targets only - this includes vmlinux, !! 634 # Build targets only - this includes vmlinux, arch specific targets, clean 684 # targets and others. In general all targets e 635 # targets and others. In general all targets except *config targets. 685 636 686 # If building an external module we do not car 637 # If building an external module we do not care about the all: rule 687 # but instead __all depend on modules 638 # but instead __all depend on modules 688 PHONY += all 639 PHONY += all 689 ifeq ($(KBUILD_EXTMOD),) 640 ifeq ($(KBUILD_EXTMOD),) 690 __all: all 641 __all: all 691 else 642 else 692 __all: modules 643 __all: modules 693 endif 644 endif 694 645 695 targets := << 696 << 697 # Decide whether to build built-in, modular, o 646 # Decide whether to build built-in, modular, or both. 698 # Normally, just do built-in. 647 # Normally, just do built-in. 699 648 700 KBUILD_MODULES := 649 KBUILD_MODULES := 701 KBUILD_BUILTIN := 1 650 KBUILD_BUILTIN := 1 702 651 703 # If we have only "make modules", don't compil 652 # If we have only "make modules", don't compile built-in objects. 704 ifeq ($(MAKECMDGOALS),modules) 653 ifeq ($(MAKECMDGOALS),modules) 705 KBUILD_BUILTIN := 654 KBUILD_BUILTIN := 706 endif 655 endif 707 656 708 # If we have "make <whatever> modules", compil 657 # If we have "make <whatever> modules", compile modules 709 # in addition to whatever we do anyway. 658 # in addition to whatever we do anyway. 710 # Just "make" or "make all" shall build module 659 # Just "make" or "make all" shall build modules as well 711 660 712 ifneq ($(filter all modules nsdeps %compile_co 661 ifneq ($(filter all modules nsdeps %compile_commands.json clang-%,$(MAKECMDGOALS)),) 713 KBUILD_MODULES := 1 662 KBUILD_MODULES := 1 714 endif 663 endif 715 664 716 ifeq ($(MAKECMDGOALS),) 665 ifeq ($(MAKECMDGOALS),) 717 KBUILD_MODULES := 1 666 KBUILD_MODULES := 1 718 endif 667 endif 719 668 720 export KBUILD_MODULES KBUILD_BUILTIN 669 export KBUILD_MODULES KBUILD_BUILTIN 721 670 722 ifdef need-config 671 ifdef need-config 723 include include/config/auto.conf 672 include include/config/auto.conf 724 endif 673 endif 725 674 726 ifeq ($(KBUILD_EXTMOD),) 675 ifeq ($(KBUILD_EXTMOD),) 727 # Objects we will link into vmlinux / subdirs 676 # Objects we will link into vmlinux / subdirs we need to visit 728 core-y := !! 677 core-y := init/ usr/ arch/$(SRCARCH)/ 729 drivers-y := !! 678 drivers-y := drivers/ sound/ >> 679 drivers-$(CONFIG_SAMPLES) += samples/ >> 680 drivers-$(CONFIG_NET) += net/ >> 681 drivers-y += virt/ 730 libs-y := lib/ 682 libs-y := lib/ 731 endif # KBUILD_EXTMOD 683 endif # KBUILD_EXTMOD 732 684 733 # The all: target is the default when no targe 685 # The all: target is the default when no target is given on the 734 # command line. 686 # command line. 735 # This allow a user to issue only 'make' to bu 687 # This allow a user to issue only 'make' to build a kernel including modules 736 # Defaults to vmlinux, but the arch makefile u 688 # Defaults to vmlinux, but the arch makefile usually adds further targets 737 all: vmlinux 689 all: vmlinux 738 690 739 CFLAGS_GCOV := -fprofile-arcs -ftest-cover !! 691 CFLAGS_GCOV := -fprofile-arcs -ftest-coverage \ 740 ifdef CONFIG_CC_IS_GCC !! 692 $(call cc-option,-fno-tree-loop-im) \ 741 CFLAGS_GCOV += -fno-tree-loop-im !! 693 $(call cc-disable-warning,maybe-uninitialized,) 742 endif << 743 export CFLAGS_GCOV 694 export CFLAGS_GCOV 744 695 745 # The arch Makefiles can override CC_FLAGS_FTR 696 # The arch Makefiles can override CC_FLAGS_FTRACE. We may also append it later. 746 ifdef CONFIG_FUNCTION_TRACER 697 ifdef CONFIG_FUNCTION_TRACER 747 CC_FLAGS_FTRACE := -pg 698 CC_FLAGS_FTRACE := -pg 748 endif 699 endif 749 700 >> 701 RETPOLINE_CFLAGS_GCC := -mindirect-branch=thunk-extern -mindirect-branch-register >> 702 RETPOLINE_VDSO_CFLAGS_GCC := -mindirect-branch=thunk-inline -mindirect-branch-register >> 703 RETPOLINE_CFLAGS_CLANG := -mretpoline-external-thunk >> 704 RETPOLINE_VDSO_CFLAGS_CLANG := -mretpoline >> 705 RETPOLINE_CFLAGS := $(call cc-option,$(RETPOLINE_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_CFLAGS_CLANG))) >> 706 RETPOLINE_VDSO_CFLAGS := $(call cc-option,$(RETPOLINE_VDSO_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_VDSO_CFLAGS_CLANG))) >> 707 export RETPOLINE_CFLAGS >> 708 export RETPOLINE_VDSO_CFLAGS >> 709 750 include $(srctree)/arch/$(SRCARCH)/Makefile 710 include $(srctree)/arch/$(SRCARCH)/Makefile 751 711 752 ifdef need-config 712 ifdef need-config 753 ifdef may-sync-config 713 ifdef may-sync-config 754 # Read in dependencies to all Kconfig* files, 714 # Read in dependencies to all Kconfig* files, make sure to run syncconfig if 755 # changes are detected. This should be include 715 # changes are detected. This should be included after arch/$(SRCARCH)/Makefile 756 # because some architectures define CROSS_COMP 716 # because some architectures define CROSS_COMPILE there. 757 include include/config/auto.conf.cmd 717 include include/config/auto.conf.cmd 758 718 759 $(KCONFIG_CONFIG): 719 $(KCONFIG_CONFIG): 760 @echo >&2 '***' 720 @echo >&2 '***' 761 @echo >&2 '*** Configuration file "$@" 721 @echo >&2 '*** Configuration file "$@" not found!' 762 @echo >&2 '***' 722 @echo >&2 '***' 763 @echo >&2 '*** Please run some configu 723 @echo >&2 '*** Please run some configurator (e.g. "make oldconfig" or' 764 @echo >&2 '*** "make menuconfig" or "m 724 @echo >&2 '*** "make menuconfig" or "make xconfig").' 765 @echo >&2 '***' 725 @echo >&2 '***' 766 @/bin/false 726 @/bin/false 767 727 768 # The actual configuration files used during t 728 # The actual configuration files used during the build are stored in 769 # include/generated/ and include/config/. Upda 729 # include/generated/ and include/config/. Update them if .config is newer than 770 # include/config/auto.conf (which mirrors .con 730 # include/config/auto.conf (which mirrors .config). 771 # 731 # 772 # This exploits the 'multi-target pattern rule 732 # This exploits the 'multi-target pattern rule' trick. 773 # The syncconfig should be executed only once 733 # The syncconfig should be executed only once to make all the targets. 774 # (Note: use the grouped target '&:' when we b 734 # (Note: use the grouped target '&:' when we bump to GNU Make 4.3) 775 # 735 # 776 # Do not use $(call cmd,...) here. That would 736 # Do not use $(call cmd,...) here. That would suppress prompts from syncconfig, 777 # so you cannot notice that Kconfig is waiting 737 # so you cannot notice that Kconfig is waiting for the user input. 778 %/config/auto.conf %/config/auto.conf.cmd %/ge !! 738 %/config/auto.conf %/config/auto.conf.cmd %/generated/autoconf.h: $(KCONFIG_CONFIG) 779 $(Q)$(kecho) " SYNC $@" 739 $(Q)$(kecho) " SYNC $@" 780 $(Q)$(MAKE) -f $(srctree)/Makefile syn 740 $(Q)$(MAKE) -f $(srctree)/Makefile syncconfig 781 else # !may-sync-config 741 else # !may-sync-config 782 # External modules and some install targets ne 742 # External modules and some install targets need include/generated/autoconf.h 783 # and include/config/auto.conf but do not care 743 # and include/config/auto.conf but do not care if they are up-to-date. 784 # Use auto.conf to trigger the test 744 # Use auto.conf to trigger the test 785 PHONY += include/config/auto.conf 745 PHONY += include/config/auto.conf 786 746 787 include/config/auto.conf: 747 include/config/auto.conf: 788 @test -e include/generated/autoconf.h !! 748 $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ 789 echo >&2; 749 echo >&2; \ 790 echo >&2 " ERROR: Kernel configuratio 750 echo >&2 " ERROR: Kernel configuration is invalid."; \ 791 echo >&2 " include/generated/a 751 echo >&2 " include/generated/autoconf.h or $@ are missing.";\ 792 echo >&2 " Run 'make oldconfig 752 echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ 793 echo >&2 ; 753 echo >&2 ; \ 794 /bin/false) 754 /bin/false) 795 755 796 endif # may-sync-config 756 endif # may-sync-config 797 endif # need-config 757 endif # need-config 798 758 799 KBUILD_CFLAGS += -fno-delete-null-pointer-ch !! 759 KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) >> 760 KBUILD_CFLAGS += $(call cc-disable-warning,frame-address,) >> 761 KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation) >> 762 KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow) >> 763 KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) 800 764 801 ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE 765 ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE 802 KBUILD_CFLAGS += -O2 766 KBUILD_CFLAGS += -O2 803 KBUILD_RUSTFLAGS += -Copt-level=2 !! 767 else ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3 >> 768 KBUILD_CFLAGS += -O3 804 else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 769 else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 805 KBUILD_CFLAGS += -Os 770 KBUILD_CFLAGS += -Os 806 KBUILD_RUSTFLAGS += -Copt-level=s << 807 endif 771 endif 808 772 809 # Always set `debug-assertions` and `overflow- << 810 # depends on `opt-level` and `debug-assertions << 811 KBUILD_RUSTFLAGS += -Cdebug-assertions=$(if $( << 812 KBUILD_RUSTFLAGS += -Coverflow-checks=$(if $(C << 813 << 814 # Tell gcc to never replace conditional load w 773 # Tell gcc to never replace conditional load with a non-conditional one 815 ifdef CONFIG_CC_IS_GCC << 816 # gcc-10 renamed --param=allow-store-data-race << 817 # -fno-allow-store-data-races. << 818 KBUILD_CFLAGS += $(call cc-option,--param=al 774 KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0) 819 KBUILD_CFLAGS += $(call cc-option,-fno-allow 775 KBUILD_CFLAGS += $(call cc-option,-fno-allow-store-data-races) 820 endif << 821 776 822 ifdef CONFIG_READABLE_ASM 777 ifdef CONFIG_READABLE_ASM 823 # Disable optimizations that make assembler li 778 # Disable optimizations that make assembler listings hard to read. 824 # reorder blocks reorders the control in the f 779 # reorder blocks reorders the control in the function 825 # ipa clone creates specialized cloned functio 780 # ipa clone creates specialized cloned functions 826 # partial inlining inlines only parts of funct 781 # partial inlining inlines only parts of functions 827 KBUILD_CFLAGS += -fno-reorder-blocks -fno-ipa- !! 782 KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ >> 783 $(call cc-option,-fno-ipa-cp-clone,) \ >> 784 $(call cc-option,-fno-partial-inlining) >> 785 endif >> 786 >> 787 ifneq ($(CONFIG_FRAME_WARN),0) >> 788 KBUILD_CFLAGS += -Wframe-larger-than=$(CONFIG_FRAME_WARN) 828 endif 789 endif 829 790 830 stackp-flags-y 791 stackp-flags-y := -fno-stack-protector 831 stackp-flags-$(CONFIG_STACKPROTECTOR) 792 stackp-flags-$(CONFIG_STACKPROTECTOR) := -fstack-protector 832 stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) 793 stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) := -fstack-protector-strong 833 794 834 KBUILD_CFLAGS += $(stackp-flags-y) 795 KBUILD_CFLAGS += $(stackp-flags-y) 835 796 836 KBUILD_RUSTFLAGS-$(CONFIG_WERROR) += -Dwarning !! 797 ifdef CONFIG_CC_IS_CLANG 837 KBUILD_RUSTFLAGS += $(KBUILD_RUSTFLAGS-y) !! 798 KBUILD_CPPFLAGS += -Qunused-arguments >> 799 KBUILD_CFLAGS += -Wno-format-invalid-specifier >> 800 KBUILD_CFLAGS += -Wno-gnu >> 801 # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the >> 802 # source of a reference will be _MergedGlobals and not on of the whitelisted names. >> 803 # See modpost pattern 2 >> 804 KBUILD_CFLAGS += -mno-global-merge >> 805 else >> 806 >> 807 # Warn about unmarked fall-throughs in switch statement. >> 808 # Disabled for clang while comment to attribute conversion happens and >> 809 # https://github.com/ClangBuiltLinux/linux/issues/636 is discussed. >> 810 KBUILD_CFLAGS += $(call cc-option,-Wimplicit-fallthrough=5,) >> 811 # gcc inanely warns about local variables called 'main' >> 812 KBUILD_CFLAGS += -Wno-main >> 813 endif >> 814 >> 815 # These warnings generated too much noise in a regular build. >> 816 # Use make W=1 to enable them (see scripts/Makefile.extrawarn) >> 817 KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) 838 818 >> 819 KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable) 839 ifdef CONFIG_FRAME_POINTER 820 ifdef CONFIG_FRAME_POINTER 840 KBUILD_CFLAGS += -fno-omit-frame-pointer -fn 821 KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls 841 KBUILD_RUSTFLAGS += -Cforce-frame-pointers=y << 842 else 822 else 843 # Some targets (ARM with Thumb2, for example), 823 # Some targets (ARM with Thumb2, for example), can't be built with frame 844 # pointers. For those, we don't have FUNCTION 824 # pointers. For those, we don't have FUNCTION_TRACER automatically 845 # select FRAME_POINTER. However, FUNCTION_TRA 825 # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is 846 # incompatible with -fomit-frame-pointer with 826 # incompatible with -fomit-frame-pointer with current GCC, so we don't use 847 # -fomit-frame-pointer with FUNCTION_TRACER. 827 # -fomit-frame-pointer with FUNCTION_TRACER. 848 # In the Rust target specification, "frame-poi << 849 # to "may-omit". << 850 ifndef CONFIG_FUNCTION_TRACER 828 ifndef CONFIG_FUNCTION_TRACER 851 KBUILD_CFLAGS += -fomit-frame-pointer 829 KBUILD_CFLAGS += -fomit-frame-pointer 852 endif 830 endif 853 endif 831 endif 854 832 855 # Initialize all stack variables with a 0xAA p 833 # Initialize all stack variables with a 0xAA pattern. 856 ifdef CONFIG_INIT_STACK_ALL_PATTERN 834 ifdef CONFIG_INIT_STACK_ALL_PATTERN 857 KBUILD_CFLAGS += -ftrivial-auto-var-init=pat 835 KBUILD_CFLAGS += -ftrivial-auto-var-init=pattern 858 endif 836 endif 859 837 860 # Initialize all stack variables with a zero v 838 # Initialize all stack variables with a zero value. 861 ifdef CONFIG_INIT_STACK_ALL_ZERO 839 ifdef CONFIG_INIT_STACK_ALL_ZERO >> 840 # Future support for zero initialization is still being debated, see >> 841 # https://bugs.llvm.org/show_bug.cgi?id=45497. These flags are subject to being >> 842 # renamed or dropped. 862 KBUILD_CFLAGS += -ftrivial-auto-var-init=zer 843 KBUILD_CFLAGS += -ftrivial-auto-var-init=zero 863 ifdef CONFIG_CC_HAS_AUTO_VAR_INIT_ZERO_ENABLER !! 844 KBUILD_CFLAGS += -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang 864 # https://github.com/llvm/llvm-project/issues/ << 865 CC_AUTO_VAR_INIT_ZERO_ENABLER := -enable-trivi << 866 export CC_AUTO_VAR_INIT_ZERO_ENABLER << 867 KBUILD_CFLAGS += $(CC_AUTO_VAR_INIT_ZERO_ENA << 868 endif << 869 endif 845 endif 870 846 871 # While VLAs have been removed, GCC produces u 847 # While VLAs have been removed, GCC produces unreachable stack probes 872 # for the randomize_kstack_offset feature. Dis 848 # for the randomize_kstack_offset feature. Disable it for all compilers. 873 KBUILD_CFLAGS += $(call cc-option, -fno-stac 849 KBUILD_CFLAGS += $(call cc-option, -fno-stack-clash-protection) 874 850 875 # Clear used registers at func exit (to reduce !! 851 DEBUG_CFLAGS := 876 ifdef CONFIG_ZERO_CALL_USED_REGS !! 852 877 KBUILD_CFLAGS += -fzero-call-used-regs=used- !! 853 # Workaround for GCC versions < 5.0 >> 854 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61801 >> 855 ifdef CONFIG_CC_IS_GCC >> 856 DEBUG_CFLAGS += $(call cc-ifversion, -lt, 0500, $(call cc-option, -fno-var-tracking-assignments)) >> 857 endif >> 858 >> 859 ifdef CONFIG_DEBUG_INFO >> 860 >> 861 ifdef CONFIG_DEBUG_INFO_SPLIT >> 862 DEBUG_CFLAGS += -gsplit-dwarf >> 863 else >> 864 DEBUG_CFLAGS += -g >> 865 endif >> 866 >> 867 ifneq ($(LLVM_IAS),1) >> 868 KBUILD_AFLAGS += -Wa,-gdwarf-2 >> 869 endif >> 870 >> 871 ifndef CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT >> 872 dwarf-version-$(CONFIG_DEBUG_INFO_DWARF4) := 4 >> 873 dwarf-version-$(CONFIG_DEBUG_INFO_DWARF5) := 5 >> 874 DEBUG_CFLAGS += -gdwarf-$(dwarf-version-y) >> 875 endif >> 876 >> 877 ifdef CONFIG_DEBUG_INFO_REDUCED >> 878 DEBUG_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ >> 879 $(call cc-option,-fno-var-tracking) >> 880 endif >> 881 >> 882 ifdef CONFIG_DEBUG_INFO_COMPRESSED >> 883 DEBUG_CFLAGS += -gz=zlib >> 884 KBUILD_AFLAGS += -gz=zlib >> 885 KBUILD_LDFLAGS += --compress-debug-sections=zlib 878 endif 886 endif 879 887 >> 888 endif # CONFIG_DEBUG_INFO >> 889 >> 890 KBUILD_CFLAGS += $(DEBUG_CFLAGS) >> 891 export DEBUG_CFLAGS >> 892 880 ifdef CONFIG_FUNCTION_TRACER 893 ifdef CONFIG_FUNCTION_TRACER 881 ifdef CONFIG_FTRACE_MCOUNT_USE_CC 894 ifdef CONFIG_FTRACE_MCOUNT_USE_CC 882 CC_FLAGS_FTRACE += -mrecord-mcount 895 CC_FLAGS_FTRACE += -mrecord-mcount 883 ifdef CONFIG_HAVE_NOP_MCOUNT 896 ifdef CONFIG_HAVE_NOP_MCOUNT 884 ifeq ($(call cc-option-yn, -mnop-mcount),y 897 ifeq ($(call cc-option-yn, -mnop-mcount),y) 885 CC_FLAGS_FTRACE += -mnop-mcount 898 CC_FLAGS_FTRACE += -mnop-mcount 886 CC_FLAGS_USING += -DCC_USING_NOP_MCOU 899 CC_FLAGS_USING += -DCC_USING_NOP_MCOUNT 887 endif 900 endif 888 endif 901 endif 889 endif 902 endif 890 ifdef CONFIG_FTRACE_MCOUNT_USE_OBJTOOL 903 ifdef CONFIG_FTRACE_MCOUNT_USE_OBJTOOL 891 ifdef CONFIG_HAVE_OBJTOOL_NOP_MCOUNT !! 904 CC_FLAGS_USING += -DCC_USING_NOP_MCOUNT 892 CC_FLAGS_USING += -DCC_USING_NOP_MCOU << 893 endif << 894 endif 905 endif 895 ifdef CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT 906 ifdef CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT 896 ifdef CONFIG_HAVE_C_RECORDMCOUNT 907 ifdef CONFIG_HAVE_C_RECORDMCOUNT 897 BUILD_C_RECORDMCOUNT := y 908 BUILD_C_RECORDMCOUNT := y 898 export BUILD_C_RECORDMCOUNT 909 export BUILD_C_RECORDMCOUNT 899 endif 910 endif 900 endif 911 endif 901 ifdef CONFIG_HAVE_FENTRY 912 ifdef CONFIG_HAVE_FENTRY 902 # s390-linux-gnu-gcc did not support -mfentr << 903 ifeq ($(call cc-option-yn, -mfentry),y) 913 ifeq ($(call cc-option-yn, -mfentry),y) 904 CC_FLAGS_FTRACE += -mfentry 914 CC_FLAGS_FTRACE += -mfentry 905 CC_FLAGS_USING += -DCC_USING_FENTRY 915 CC_FLAGS_USING += -DCC_USING_FENTRY 906 endif 916 endif 907 endif 917 endif 908 export CC_FLAGS_FTRACE 918 export CC_FLAGS_FTRACE 909 KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_FLA 919 KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_FLAGS_USING) 910 KBUILD_AFLAGS += $(CC_FLAGS_USING) 920 KBUILD_AFLAGS += $(CC_FLAGS_USING) 911 endif 921 endif 912 922 913 # We trigger additional mismatches with less i 923 # We trigger additional mismatches with less inlining 914 ifdef CONFIG_DEBUG_SECTION_MISMATCH 924 ifdef CONFIG_DEBUG_SECTION_MISMATCH 915 KBUILD_CFLAGS += -fno-inline-functions-called- !! 925 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) 916 endif 926 endif 917 927 918 # `rustc`'s `-Zfunction-sections` applies to d << 919 ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION 928 ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION 920 KBUILD_CFLAGS_KERNEL += -ffunction-sections -f 929 KBUILD_CFLAGS_KERNEL += -ffunction-sections -fdata-sections 921 KBUILD_RUSTFLAGS_KERNEL += -Zfunction-sections << 922 LDFLAGS_vmlinux += --gc-sections 930 LDFLAGS_vmlinux += --gc-sections 923 endif 931 endif 924 932 925 ifdef CONFIG_SHADOW_CALL_STACK 933 ifdef CONFIG_SHADOW_CALL_STACK 926 ifndef CONFIG_DYNAMIC_SCS << 927 CC_FLAGS_SCS := -fsanitize=shadow-call-stac 934 CC_FLAGS_SCS := -fsanitize=shadow-call-stack 928 KBUILD_CFLAGS += $(CC_FLAGS_SCS) 935 KBUILD_CFLAGS += $(CC_FLAGS_SCS) 929 KBUILD_RUSTFLAGS += -Zsanitizer=shadow-call-st << 930 endif << 931 export CC_FLAGS_SCS 936 export CC_FLAGS_SCS 932 endif 937 endif 933 938 934 ifdef CONFIG_LTO_CLANG 939 ifdef CONFIG_LTO_CLANG 935 ifdef CONFIG_LTO_CLANG_THIN 940 ifdef CONFIG_LTO_CLANG_THIN 936 CC_FLAGS_LTO := -flto=thin -fsplit-lto-unit 941 CC_FLAGS_LTO := -flto=thin -fsplit-lto-unit >> 942 KBUILD_LDFLAGS += --thinlto-cache-dir=$(extmod_prefix).thinlto-cache 937 else 943 else 938 CC_FLAGS_LTO := -flto 944 CC_FLAGS_LTO := -flto 939 endif 945 endif 940 CC_FLAGS_LTO += -fvisibility=hidden 946 CC_FLAGS_LTO += -fvisibility=hidden 941 947 942 # Limit inlining across translation units to r 948 # Limit inlining across translation units to reduce binary size 943 KBUILD_LDFLAGS += -mllvm -import-instr-limit=5 949 KBUILD_LDFLAGS += -mllvm -import-instr-limit=5 >> 950 >> 951 # Check for frame size exceeding threshold during prolog/epilog insertion >> 952 # when using lld < 13.0.0. >> 953 ifneq ($(CONFIG_FRAME_WARN),0) >> 954 ifeq ($(shell test $(CONFIG_LLD_VERSION) -lt 130000; echo $$?),0) >> 955 KBUILD_LDFLAGS += -plugin-opt=-warn-stack-size=$(CONFIG_FRAME_WARN) >> 956 endif >> 957 endif 944 endif 958 endif 945 959 946 ifdef CONFIG_LTO 960 ifdef CONFIG_LTO 947 KBUILD_CFLAGS += -fno-lto $(CC_FLAGS_LTO) 961 KBUILD_CFLAGS += -fno-lto $(CC_FLAGS_LTO) 948 KBUILD_AFLAGS += -fno-lto 962 KBUILD_AFLAGS += -fno-lto 949 export CC_FLAGS_LTO 963 export CC_FLAGS_LTO 950 endif 964 endif 951 965 952 ifdef CONFIG_CFI_CLANG 966 ifdef CONFIG_CFI_CLANG 953 CC_FLAGS_CFI := -fsanitize=kcfi !! 967 CC_FLAGS_CFI := -fsanitize=cfi \ 954 ifdef CONFIG_CFI_ICALL_NORMALIZE_INTEGERS !! 968 -fsanitize-cfi-cross-dso \ 955 CC_FLAGS_CFI += -fsanitize-cfi-ical !! 969 -fno-sanitize-cfi-canonical-jump-tables \ 956 endif !! 970 -fno-sanitize-trap=cfi \ 957 ifdef CONFIG_RUST !! 971 -fno-sanitize-blacklist 958 # Always pass -Zsanitizer-cfi-normaliz !! 972 959 # CONFIG_CFI_ICALL_NORMALIZE_INTEGERS. !! 973 ifdef CONFIG_CFI_PERMISSIVE 960 RUSTC_FLAGS_CFI := -Zsanitizer=kcfi !! 974 CC_FLAGS_CFI += -fsanitize-recover=cfi 961 KBUILD_RUSTFLAGS += $(RUSTC_FLAGS_CFI) << 962 export RUSTC_FLAGS_CFI << 963 endif 975 endif >> 976 >> 977 # If LTO flags are filtered out, we must also filter out CFI. >> 978 CC_FLAGS_LTO += $(CC_FLAGS_CFI) 964 KBUILD_CFLAGS += $(CC_FLAGS_CFI) 979 KBUILD_CFLAGS += $(CC_FLAGS_CFI) 965 export CC_FLAGS_CFI 980 export CC_FLAGS_CFI 966 endif 981 endif 967 982 968 # Architectures can define flags to add/remove !! 983 ifdef CONFIG_DEBUG_FORCE_FUNCTION_ALIGN_64B 969 CC_FLAGS_FPU += -D_LINUX_FPU_COMPILATION_UN !! 984 KBUILD_CFLAGS += -falign-functions=64 970 export CC_FLAGS_FPU << 971 export CC_FLAGS_NO_FPU << 972 << 973 ifneq ($(CONFIG_FUNCTION_ALIGNMENT),0) << 974 # Set the minimal function alignment. Use the << 975 # -fmin-function-alignment if it is available, << 976 # See also CONFIG_CC_HAS_SANE_FUNCTION_ALIGNME << 977 ifdef CONFIG_CC_HAS_MIN_FUNCTION_ALIGNMENT << 978 KBUILD_CFLAGS += -fmin-function-alignment=$(CO << 979 else << 980 KBUILD_CFLAGS += -falign-functions=$(CONFIG_FU << 981 endif << 982 endif 985 endif 983 986 984 # arch Makefile may override CC so keep this a 987 # arch Makefile may override CC so keep this after arch Makefile is included 985 NOSTDINC_FLAGS += -nostdinc !! 988 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) >> 989 >> 990 # warn about C99 declaration after statement >> 991 KBUILD_CFLAGS += -Wdeclaration-after-statement >> 992 >> 993 # Variable Length Arrays (VLAs) should not be used anywhere in the kernel >> 994 KBUILD_CFLAGS += -Wvla 986 995 987 # To gain proper coverage for CONFIG_UBSAN_BOU !! 996 # disable pointer signed / unsigned warnings in gcc 4.0 988 # the kernel uses only C99 flexible arrays for !! 997 KBUILD_CFLAGS += -Wno-pointer-sign 989 # arrays. Enforce this for everything that may !! 998 990 # perform bounds checking. !! 999 # disable stringop warnings in gcc 8+ 991 KBUILD_CFLAGS += $(call cc-option, -fstrict-fl !! 1000 KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation) 992 !! 1001 993 #Currently, disable -Wstringop-overflow for GC !! 1002 # We'll want to enable this eventually, but it's not going away for 5.7 at least 994 KBUILD_CFLAGS-$(CONFIG_CC_NO_STRINGOP_OVERFLOW !! 1003 KBUILD_CFLAGS += $(call cc-disable-warning, zero-length-bounds) 995 KBUILD_CFLAGS-$(CONFIG_CC_STRINGOP_OVERFLOW) + !! 1004 KBUILD_CFLAGS += $(call cc-disable-warning, array-bounds) >> 1005 KBUILD_CFLAGS += $(call cc-disable-warning, stringop-overflow) >> 1006 >> 1007 # Another good warning that we'll want to enable eventually >> 1008 KBUILD_CFLAGS += $(call cc-disable-warning, restrict) >> 1009 >> 1010 # Enabled with W=2, disabled by default as noisy >> 1011 KBUILD_CFLAGS += $(call cc-disable-warning, maybe-uninitialized) 996 1012 997 # disable invalid "can't wrap" optimizations f 1013 # disable invalid "can't wrap" optimizations for signed / pointers 998 KBUILD_CFLAGS += -fno-strict-overflow 1014 KBUILD_CFLAGS += -fno-strict-overflow 999 1015 1000 # Make sure -fstack-check isn't enabled (like 1016 # Make sure -fstack-check isn't enabled (like gentoo apparently did) 1001 KBUILD_CFLAGS += -fno-stack-check 1017 KBUILD_CFLAGS += -fno-stack-check 1002 1018 1003 # conserve stack if available 1019 # conserve stack if available 1004 ifdef CONFIG_CC_IS_GCC !! 1020 KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) 1005 KBUILD_CFLAGS += -fconserve-stack !! 1021 1006 endif !! 1022 # Prohibit date/time macros, which would make the build non-deterministic >> 1023 KBUILD_CFLAGS += -Werror=date-time >> 1024 >> 1025 # enforce correct pointer usage >> 1026 KBUILD_CFLAGS += $(call cc-option,-Werror=incompatible-pointer-types) >> 1027 >> 1028 # Require designated initializers for all marked structures >> 1029 KBUILD_CFLAGS += $(call cc-option,-Werror=designated-init) 1007 1030 1008 # change __FILE__ to the relative path from t 1031 # change __FILE__ to the relative path from the srctree 1009 KBUILD_CPPFLAGS += $(call cc-option,-fmacro-p 1032 KBUILD_CPPFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=) 1010 1033 1011 # include additional Makefiles when needed 1034 # include additional Makefiles when needed 1012 include-y := scripts/Ma 1035 include-y := scripts/Makefile.extrawarn 1013 include-$(CONFIG_DEBUG_INFO) += scripts/Ma << 1014 include-$(CONFIG_DEBUG_INFO_BTF)+= scripts/Ma << 1015 include-$(CONFIG_KASAN) += scripts/Ma 1036 include-$(CONFIG_KASAN) += scripts/Makefile.kasan 1016 include-$(CONFIG_KCSAN) += scripts/Ma 1037 include-$(CONFIG_KCSAN) += scripts/Makefile.kcsan 1017 include-$(CONFIG_KMSAN) += scripts/Ma << 1018 include-$(CONFIG_UBSAN) += scripts/Ma 1038 include-$(CONFIG_UBSAN) += scripts/Makefile.ubsan 1019 include-$(CONFIG_KCOV) += scripts/Ma 1039 include-$(CONFIG_KCOV) += scripts/Makefile.kcov 1020 include-$(CONFIG_RANDSTRUCT) += scripts/Ma << 1021 include-$(CONFIG_GCC_PLUGINS) += scripts/Ma 1040 include-$(CONFIG_GCC_PLUGINS) += scripts/Makefile.gcc-plugins 1022 1041 1023 include $(addprefix $(srctree)/, $(include-y) 1042 include $(addprefix $(srctree)/, $(include-y)) 1024 1043 1025 # scripts/Makefile.gcc-plugins is intentional 1044 # scripts/Makefile.gcc-plugins is intentionally included last. 1026 # Do not add $(call cc-option,...) below this 1045 # Do not add $(call cc-option,...) below this line. When you build the kernel 1027 # from the clean source tree, the GCC plugins 1046 # from the clean source tree, the GCC plugins do not exist at this point. 1028 1047 1029 # Add user supplied CPPFLAGS, AFLAGS, CFLAGS !! 1048 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments 1030 KBUILD_CPPFLAGS += $(KCPPFLAGS) 1049 KBUILD_CPPFLAGS += $(KCPPFLAGS) 1031 KBUILD_AFLAGS += $(KAFLAGS) 1050 KBUILD_AFLAGS += $(KAFLAGS) 1032 KBUILD_CFLAGS += $(KCFLAGS) 1051 KBUILD_CFLAGS += $(KCFLAGS) 1033 KBUILD_RUSTFLAGS += $(KRUSTFLAGS) << 1034 1052 1035 KBUILD_LDFLAGS_MODULE += --build-id=sha1 1053 KBUILD_LDFLAGS_MODULE += --build-id=sha1 1036 LDFLAGS_vmlinux += --build-id=sha1 1054 LDFLAGS_vmlinux += --build-id=sha1 1037 1055 1038 KBUILD_LDFLAGS += -z noexecstack << 1039 ifeq ($(CONFIG_LD_IS_BFD),y) << 1040 KBUILD_LDFLAGS += $(call ld-option,--no-warn << 1041 endif << 1042 << 1043 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) 1056 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) 1044 LDFLAGS_vmlinux += -X !! 1057 LDFLAGS_vmlinux += $(call ld-option, -X,) 1045 endif 1058 endif 1046 1059 1047 ifeq ($(CONFIG_RELR),y) 1060 ifeq ($(CONFIG_RELR),y) 1048 # ld.lld before 15 did not support -z pack-re !! 1061 LDFLAGS_vmlinux += --pack-dyn-relocs=relr --use-android-relr-tags 1049 LDFLAGS_vmlinux += $(call ld-option,--pack-dy << 1050 endif 1062 endif 1051 1063 1052 # We never want expected sections to be place 1064 # We never want expected sections to be placed heuristically by the 1053 # linker. All sections should be explicitly n 1065 # linker. All sections should be explicitly named in the linker script. 1054 ifdef CONFIG_LD_ORPHAN_WARN 1066 ifdef CONFIG_LD_ORPHAN_WARN 1055 LDFLAGS_vmlinux += --orphan-handling=$(CONFIG !! 1067 LDFLAGS_vmlinux += --orphan-handling=warn 1056 endif 1068 endif 1057 1069 1058 # Align the bit size of userspace programs wi 1070 # Align the bit size of userspace programs with the kernel 1059 KBUILD_USERCFLAGS += $(filter -m32 -m64 --ta 1071 KBUILD_USERCFLAGS += $(filter -m32 -m64 --target=%, $(KBUILD_CFLAGS)) 1060 KBUILD_USERLDFLAGS += $(filter -m32 -m64 --ta 1072 KBUILD_USERLDFLAGS += $(filter -m32 -m64 --target=%, $(KBUILD_CFLAGS)) 1061 1073 1062 # make the checker run with the right archite 1074 # make the checker run with the right architecture 1063 CHECKFLAGS += --arch=$(ARCH) 1075 CHECKFLAGS += --arch=$(ARCH) 1064 1076 1065 # insure the checker run with the right endia 1077 # insure the checker run with the right endianness 1066 CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),- 1078 CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),-mbig-endian,-mlittle-endian) 1067 1079 1068 # the checker needs the correct machine size 1080 # the checker needs the correct machine size 1069 CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) 1081 CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) 1070 1082 1071 # Default kernel image to build when no speci 1083 # Default kernel image to build when no specific target is given. 1072 # KBUILD_IMAGE may be overruled on the comman 1084 # KBUILD_IMAGE may be overruled on the command line or 1073 # set in the environment 1085 # set in the environment 1074 # Also any assignments in arch/$(ARCH)/Makefi 1086 # Also any assignments in arch/$(ARCH)/Makefile take precedence over 1075 # this default value 1087 # this default value 1076 export KBUILD_IMAGE ?= vmlinux 1088 export KBUILD_IMAGE ?= vmlinux 1077 1089 1078 # 1090 # 1079 # INSTALL_PATH specifies where to place the u 1091 # INSTALL_PATH specifies where to place the updated kernel and system map 1080 # images. Default is /boot, but you can set i 1092 # images. Default is /boot, but you can set it to other values 1081 export INSTALL_PATH ?= /boot 1093 export INSTALL_PATH ?= /boot 1082 1094 1083 # 1095 # 1084 # INSTALL_DTBS_PATH specifies a prefix for re 1096 # INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots. 1085 # Like INSTALL_MOD_PATH, it isn't defined in 1097 # Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as 1086 # an argument if needed. Otherwise it default 1098 # an argument if needed. Otherwise it defaults to the kernel install path 1087 # 1099 # 1088 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/d 1100 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) 1089 1101 1090 # 1102 # 1091 # INSTALL_MOD_PATH specifies a prefix to MODL 1103 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 1092 # relocations required by build roots. This 1104 # relocations required by build roots. This is not defined in the 1093 # makefile but the argument can be passed to 1105 # makefile but the argument can be passed to make if needed. 1094 # 1106 # 1095 1107 1096 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(K 1108 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 1097 export MODLIB 1109 export MODLIB 1098 1110 1099 PHONY += prepare0 1111 PHONY += prepare0 1100 1112 1101 export extmod_prefix = $(if $(KBUILD_EXTMOD), 1113 export extmod_prefix = $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/) 1102 export MODORDER := $(extmod_prefix)modules.or 1114 export MODORDER := $(extmod_prefix)modules.order 1103 export MODULES_NSDEPS := $(extmod_prefix)modu 1115 export MODULES_NSDEPS := $(extmod_prefix)modules.nsdeps 1104 1116 1105 ifeq ($(KBUILD_EXTMOD),) 1117 ifeq ($(KBUILD_EXTMOD),) >> 1118 core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/ 1106 1119 1107 build-dir := . !! 1120 vmlinux-dirs := $(patsubst %/,%,$(filter %/, \ 1108 clean-dirs := $(sort . Documentation \ !! 1121 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ >> 1122 $(libs-y) $(libs-m))) >> 1123 >> 1124 vmlinux-alldirs := $(sort $(vmlinux-dirs) Documentation \ 1109 $(patsubst %/,%,$(filter 1125 $(patsubst %/,%,$(filter %/, $(core-) \ 1110 $(drivers-) $(libs-)) 1126 $(drivers-) $(libs-)))) 1111 1127 1112 export ARCH_CORE := $(core-y) !! 1128 subdir-modorder := $(addsuffix modules.order,$(filter %/, \ 1113 export ARCH_LIB := $(filter %/, $(lib !! 1129 $(core-y) $(core-m) $(libs-y) $(libs-m) \ 1114 export ARCH_DRIVERS := $(drivers-y) $(dri !! 1130 $(drivers-y) $(drivers-m))) 1115 # Externally visible symbols (used by link-vm !! 1131 >> 1132 build-dirs := $(vmlinux-dirs) >> 1133 clean-dirs := $(vmlinux-alldirs) 1116 1134 1117 KBUILD_VMLINUX_OBJS := ./built-in.a !! 1135 # Externally visible symbols (used by link-vmlinux.sh) >> 1136 KBUILD_VMLINUX_OBJS := $(head-y) $(patsubst %/,%/built-in.a, $(core-y)) >> 1137 KBUILD_VMLINUX_OBJS += $(addsuffix built-in.a, $(filter %/, $(libs-y))) 1118 ifdef CONFIG_MODULES 1138 ifdef CONFIG_MODULES 1119 KBUILD_VMLINUX_OBJS += $(patsubst %/, %/lib.a 1139 KBUILD_VMLINUX_OBJS += $(patsubst %/, %/lib.a, $(filter %/, $(libs-y))) 1120 KBUILD_VMLINUX_LIBS := $(filter-out %/, $(lib 1140 KBUILD_VMLINUX_LIBS := $(filter-out %/, $(libs-y)) 1121 else 1141 else 1122 KBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a, 1142 KBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a, $(libs-y)) 1123 endif 1143 endif >> 1144 KBUILD_VMLINUX_OBJS += $(patsubst %/,%/built-in.a, $(drivers-y)) 1124 1145 1125 export KBUILD_VMLINUX_LIBS !! 1146 export KBUILD_VMLINUX_OBJS KBUILD_VMLINUX_LIBS 1126 export KBUILD_LDS := arch/$(SRCARCH) 1147 export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds >> 1148 # used by scripts/Makefile.package >> 1149 export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) LICENSES arch include scripts tools) >> 1150 >> 1151 vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) 1127 1152 >> 1153 # Recurse until adjust_autoksyms.sh is satisfied >> 1154 PHONY += autoksyms_recursive 1128 ifdef CONFIG_TRIM_UNUSED_KSYMS 1155 ifdef CONFIG_TRIM_UNUSED_KSYMS 1129 # For the kernel to actually contain only the 1156 # For the kernel to actually contain only the needed exported symbols, 1130 # we have to build modules as well to determi 1157 # we have to build modules as well to determine what those symbols are. >> 1158 # (this can be evaluated only once include/config/auto.conf has been included) 1131 KBUILD_MODULES := 1 1159 KBUILD_MODULES := 1 >> 1160 >> 1161 autoksyms_recursive: descend modules.order >> 1162 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \ >> 1163 "$(MAKE) -f $(srctree)/Makefile vmlinux" 1132 endif 1164 endif 1133 1165 1134 # '$(AR) mPi' needs 'T' to workaround the bug !! 1166 autoksyms_h := $(if $(CONFIG_TRIM_UNUSED_KSYMS), include/generated/autoksyms.h) 1135 quiet_cmd_ar_vmlinux.a = AR $@ << 1136 cmd_ar_vmlinux.a = \ << 1137 rm -f $@; \ << 1138 $(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS << 1139 $(AR) mPiT $$($(AR) t $@ | sed -n 1p) << 1140 << 1141 targets += vmlinux.a << 1142 vmlinux.a: $(KBUILD_VMLINUX_OBJS) scripts/hea << 1143 $(call if_changed,ar_vmlinux.a) << 1144 << 1145 PHONY += vmlinux_o << 1146 vmlinux_o: vmlinux.a $(KBUILD_VMLINUX_LIBS) << 1147 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1148 1167 1149 vmlinux.o modules.builtin.modinfo modules.bui !! 1168 quiet_cmd_autoksyms_h = GEN $@ 1150 @: !! 1169 cmd_autoksyms_h = mkdir -p $(dir $@); \ >> 1170 $(CONFIG_SHELL) $(srctree)/scripts/gen_autoksyms.sh $@ >> 1171 >> 1172 $(autoksyms_h): >> 1173 $(call cmd,autoksyms_h) >> 1174 >> 1175 ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink) >> 1176 >> 1177 # Final link of vmlinux with optional arch pass after final link >> 1178 cmd_link-vmlinux = \ >> 1179 $(CONFIG_SHELL) $< "$(LD)" "$(KBUILD_LDFLAGS)" "$(LDFLAGS_vmlinux)"; \ >> 1180 $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) 1151 1181 1152 PHONY += vmlinux !! 1182 vmlinux: scripts/link-vmlinux.sh autoksyms_recursive $(vmlinux-deps) FORCE 1153 # LDFLAGS_vmlinux in the top Makefile defines !! 1183 +$(call if_changed_dep,link-vmlinux) 1154 # not for decompressors. LDFLAGS_vmlinux in a !! 1184 1155 # unrelated; the decompressors just happen to !! 1185 targets := vmlinux 1156 # arch/*/boot/compressed/vmlinux. << 1157 # Export LDFLAGS_vmlinux only to scripts/Make << 1158 # << 1159 # _LDFLAGS_vmlinux is a workaround for the 'p << 1160 # https://savannah.gnu.org/bugs/?61463 << 1161 # For Make > 4.4, the following simple code w << 1162 # vmlinux: private export LDFLAGS_vmlinux := << 1163 vmlinux: private _LDFLAGS_vmlinux := $(LDFLAG << 1164 vmlinux: export LDFLAGS_vmlinux = $(_LDFLAGS_ << 1165 vmlinux: vmlinux.o $(KBUILD_LDS) modpost << 1166 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1167 1186 1168 # The actual objects are generated when desce 1187 # The actual objects are generated when descending, 1169 # make sure no implicit rule kicks in 1188 # make sure no implicit rule kicks in 1170 $(sort $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $ !! 1189 $(sort $(vmlinux-deps) $(subdir-modorder)): descend ; 1171 1190 1172 ifeq ($(origin KERNELRELEASE),file) !! 1191 filechk_kernel.release = \ 1173 filechk_kernel.release = $(srctree)/scripts/s !! 1192 echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 1174 else << 1175 filechk_kernel.release = echo $(KERNELRELEASE << 1176 endif << 1177 1193 1178 # Store (new) KERNELRELEASE string in include 1194 # Store (new) KERNELRELEASE string in include/config/kernel.release 1179 include/config/kernel.release: FORCE 1195 include/config/kernel.release: FORCE 1180 $(call filechk,kernel.release) 1196 $(call filechk,kernel.release) 1181 1197 1182 # Additional helpers built in scripts/ 1198 # Additional helpers built in scripts/ 1183 # Carefully list dependencies so we do not tr 1199 # Carefully list dependencies so we do not try to build scripts twice 1184 # in parallel 1200 # in parallel 1185 PHONY += scripts 1201 PHONY += scripts 1186 scripts: scripts_basic scripts_dtc 1202 scripts: scripts_basic scripts_dtc 1187 $(Q)$(MAKE) $(build)=$(@) 1203 $(Q)$(MAKE) $(build)=$(@) 1188 1204 1189 # Things we need to do before we recursively 1205 # Things we need to do before we recursively start building the kernel 1190 # or the modules are listed in "prepare". 1206 # or the modules are listed in "prepare". 1191 # A multi level approach is used. prepareN is 1207 # A multi level approach is used. prepareN is processed before prepareN-1. 1192 # archprepare is used in arch Makefiles and w 1208 # archprepare is used in arch Makefiles and when processed asm symlink, 1193 # version.h and scripts_basic is processed / 1209 # version.h and scripts_basic is processed / created. 1194 1210 1195 PHONY += prepare archprepare 1211 PHONY += prepare archprepare 1196 1212 1197 archprepare: outputmakefile archheaders archs 1213 archprepare: outputmakefile archheaders archscripts scripts include/config/kernel.release \ 1198 asm-generic $(version_h) include/gene !! 1214 asm-generic $(version_h) $(autoksyms_h) include/generated/utsrelease.h \ 1199 include/generated/compile.h include/g !! 1215 include/generated/autoconf.h remove-stale-files 1200 1216 1201 prepare0: archprepare 1217 prepare0: archprepare 1202 $(Q)$(MAKE) $(build)=scripts/mod 1218 $(Q)$(MAKE) $(build)=scripts/mod 1203 $(Q)$(MAKE) $(build)=. prepare !! 1219 $(Q)$(MAKE) $(build)=. 1204 1220 1205 # All the preparing.. 1221 # All the preparing.. 1206 prepare: prepare0 1222 prepare: prepare0 1207 ifdef CONFIG_RUST << 1208 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1209 $(Q)$(MAKE) $(build)=rust << 1210 endif << 1211 1223 1212 PHONY += remove-stale-files 1224 PHONY += remove-stale-files 1213 remove-stale-files: 1225 remove-stale-files: 1214 $(Q)$(srctree)/scripts/remove-stale-f 1226 $(Q)$(srctree)/scripts/remove-stale-files 1215 1227 1216 # Support for using generic headers in asm-ge 1228 # Support for using generic headers in asm-generic 1217 asm-generic := -f $(srctree)/scripts/Makefile !! 1229 asm-generic := -f $(srctree)/scripts/Makefile.asm-generic obj 1218 1230 1219 PHONY += asm-generic uapi-asm-generic 1231 PHONY += asm-generic uapi-asm-generic 1220 asm-generic: uapi-asm-generic 1232 asm-generic: uapi-asm-generic 1221 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC 1233 $(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/asm \ 1222 generic=include/asm-generic 1234 generic=include/asm-generic 1223 uapi-asm-generic: 1235 uapi-asm-generic: 1224 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC 1236 $(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/uapi/asm \ 1225 generic=include/uapi/asm-generic 1237 generic=include/uapi/asm-generic 1226 1238 1227 # Generate some files 1239 # Generate some files 1228 # ------------------------------------------- 1240 # --------------------------------------------------------------------------- 1229 1241 1230 # KERNELRELEASE can change from a few differe 1242 # KERNELRELEASE can change from a few different places, meaning version.h 1231 # needs to be updated, so this check is force 1243 # needs to be updated, so this check is forced on all builds 1232 1244 1233 uts_len := 64 1245 uts_len := 64 1234 define filechk_utsrelease.h 1246 define filechk_utsrelease.h 1235 if [ `echo -n "$(KERNELRELEASE)" | wc 1247 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 1236 echo '"$(KERNELRELEASE)" exceeds $( 1248 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 1237 exit 1; 1249 exit 1; \ 1238 fi; 1250 fi; \ 1239 echo \#define UTS_RELEASE \"$(KERNELR 1251 echo \#define UTS_RELEASE \"$(KERNELRELEASE)\" 1240 endef 1252 endef 1241 1253 1242 define filechk_version.h 1254 define filechk_version.h 1243 if [ $(SUBLEVEL) -gt 255 ]; then 1255 if [ $(SUBLEVEL) -gt 255 ]; then \ 1244 echo \#define LINUX_VERSION_C 1256 echo \#define LINUX_VERSION_CODE $(shell \ 1245 expr $(VERSION) \* 65536 + $( 1257 expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + 255); \ 1246 else 1258 else \ 1247 echo \#define LINUX_VERSION_C 1259 echo \#define LINUX_VERSION_CODE $(shell \ 1248 expr $(VERSION) \* 65536 + $( 1260 expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \ 1249 fi; 1261 fi; \ 1250 echo '#define KERNEL_VERSION(a,b,c) ( 1262 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + \ 1251 ((c) > 255 ? 255 : (c)))'; 1263 ((c) > 255 ? 255 : (c)))'; \ 1252 echo \#define LINUX_VERSION_MAJOR $(V 1264 echo \#define LINUX_VERSION_MAJOR $(VERSION); \ 1253 echo \#define LINUX_VERSION_PATCHLEVE 1265 echo \#define LINUX_VERSION_PATCHLEVEL $(PATCHLEVEL); \ 1254 echo \#define LINUX_VERSION_SUBLEVEL 1266 echo \#define LINUX_VERSION_SUBLEVEL $(SUBLEVEL) 1255 endef 1267 endef 1256 1268 1257 $(version_h): private PATCHLEVEL := $(or $(PA !! 1269 $(version_h): PATCHLEVEL := $(if $(PATCHLEVEL), $(PATCHLEVEL), 0) 1258 $(version_h): private SUBLEVEL := $(or $(SUBL !! 1270 $(version_h): SUBLEVEL := $(if $(SUBLEVEL), $(SUBLEVEL), 0) 1259 $(version_h): FORCE 1271 $(version_h): FORCE 1260 $(call filechk,version.h) 1272 $(call filechk,version.h) 1261 1273 1262 include/generated/utsrelease.h: include/confi 1274 include/generated/utsrelease.h: include/config/kernel.release FORCE 1263 $(call filechk,utsrelease.h) 1275 $(call filechk,utsrelease.h) 1264 1276 1265 filechk_compile.h = $(srctree)/scripts/mkcomp << 1266 "$(UTS_MACHINE)" "$(CONFIG_CC_VERSION << 1267 << 1268 include/generated/compile.h: FORCE << 1269 $(call filechk,compile.h) << 1270 << 1271 PHONY += headerdep 1277 PHONY += headerdep 1272 headerdep: 1278 headerdep: 1273 $(Q)find $(srctree)/include/ -name '* 1279 $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ 1274 $(srctree)/scripts/headerdep.pl -I$(s 1280 $(srctree)/scripts/headerdep.pl -I$(srctree)/include 1275 1281 1276 # ------------------------------------------- 1282 # --------------------------------------------------------------------------- 1277 # Kernel headers 1283 # Kernel headers 1278 1284 1279 #Default location for installed headers 1285 #Default location for installed headers 1280 export INSTALL_HDR_PATH = $(objtree)/usr 1286 export INSTALL_HDR_PATH = $(objtree)/usr 1281 1287 1282 quiet_cmd_headers_install = INSTALL $(INSTALL 1288 quiet_cmd_headers_install = INSTALL $(INSTALL_HDR_PATH)/include 1283 cmd_headers_install = \ 1289 cmd_headers_install = \ 1284 mkdir -p $(INSTALL_HDR_PATH); \ 1290 mkdir -p $(INSTALL_HDR_PATH); \ 1285 rsync -mrl --include='*/' --include=' 1291 rsync -mrl --include='*/' --include='*\.h' --exclude='*' \ 1286 usr/include $(INSTALL_HDR_PATH) 1292 usr/include $(INSTALL_HDR_PATH) 1287 1293 1288 PHONY += headers_install 1294 PHONY += headers_install 1289 headers_install: headers 1295 headers_install: headers 1290 $(call cmd,headers_install) 1296 $(call cmd,headers_install) 1291 1297 1292 PHONY += archheaders archscripts 1298 PHONY += archheaders archscripts 1293 1299 1294 hdr-inst := -f $(srctree)/scripts/Makefile.he 1300 hdr-inst := -f $(srctree)/scripts/Makefile.headersinst obj 1295 1301 1296 PHONY += headers 1302 PHONY += headers 1297 headers: $(version_h) scripts_unifdef uapi-as 1303 headers: $(version_h) scripts_unifdef uapi-asm-generic archheaders archscripts 1298 $(if $(filter um, $(SRCARCH)), $(erro !! 1304 $(if $(wildcard $(srctree)/arch/$(SRCARCH)/include/uapi/asm/Kbuild),, \ >> 1305 $(error Headers not exportable for the $(SRCARCH) architecture)) 1299 $(Q)$(MAKE) $(hdr-inst)=include/uapi 1306 $(Q)$(MAKE) $(hdr-inst)=include/uapi 1300 $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARC 1307 $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi 1301 1308 >> 1309 # Deprecated. It is no-op now. >> 1310 PHONY += headers_check >> 1311 headers_check: >> 1312 @echo >&2 "=================== WARNING ===================" >> 1313 @echo >&2 "Since Linux 5.5, 'make headers_check' is no-op," >> 1314 @echo >&2 "and will be removed after Linux 5.15 release." >> 1315 @echo >&2 "Please remove headers_check from your scripts." >> 1316 @echo >&2 "===============================================" >> 1317 1302 ifdef CONFIG_HEADERS_INSTALL 1318 ifdef CONFIG_HEADERS_INSTALL 1303 prepare: headers 1319 prepare: headers 1304 endif 1320 endif 1305 1321 1306 PHONY += scripts_unifdef 1322 PHONY += scripts_unifdef 1307 scripts_unifdef: scripts_basic 1323 scripts_unifdef: scripts_basic 1308 $(Q)$(MAKE) $(build)=scripts scripts/ 1324 $(Q)$(MAKE) $(build)=scripts scripts/unifdef 1309 1325 1310 # ------------------------------------------- 1326 # --------------------------------------------------------------------------- 1311 # Install 1327 # Install 1312 1328 1313 # Many distributions have the custom install 1329 # Many distributions have the custom install script, /sbin/installkernel. 1314 # If DKMS is installed, 'make install' will e !! 1330 # If DKMS is installed, 'make install' will eventually recuses back 1315 # to this Makefile to build and install exter !! 1331 # to the this Makefile to build and install external modules. 1316 # Cancel sub_make_done so that options such a 1332 # Cancel sub_make_done so that options such as M=, V=, etc. are parsed. 1317 1333 1318 quiet_cmd_install = INSTALL $(INSTALL_PATH) !! 1334 install: sub_make_done := 1319 cmd_install = unset sub_make_done; $(sr << 1320 << 1321 # ------------------------------------------- << 1322 # vDSO install << 1323 << 1324 PHONY += vdso_install << 1325 vdso_install: export INSTALL_FILES = $(vdso-i << 1326 vdso_install: << 1327 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1328 1335 1329 # ------------------------------------------- 1336 # --------------------------------------------------------------------------- 1330 # Tools 1337 # Tools 1331 1338 1332 ifdef CONFIG_OBJTOOL !! 1339 ifdef CONFIG_STACK_VALIDATION 1333 prepare: tools/objtool 1340 prepare: tools/objtool 1334 endif 1341 endif 1335 1342 1336 ifdef CONFIG_BPF 1343 ifdef CONFIG_BPF 1337 ifdef CONFIG_DEBUG_INFO_BTF 1344 ifdef CONFIG_DEBUG_INFO_BTF 1338 prepare: tools/bpf/resolve_btfids 1345 prepare: tools/bpf/resolve_btfids 1339 endif 1346 endif 1340 endif 1347 endif 1341 1348 1342 # The tools build system is not a part of Kbu << 1343 # its own unique issues. If you need to integ << 1344 # please consider locating that tool outside << 1345 # standard Kbuild "hostprogs" syntax instead << 1346 # here. See Documentation/kbuild/makefiles.rs << 1347 << 1348 PHONY += resolve_btfids_clean 1349 PHONY += resolve_btfids_clean 1349 1350 1350 resolve_btfids_O = $(abspath $(objtree))/tool 1351 resolve_btfids_O = $(abspath $(objtree))/tools/bpf/resolve_btfids 1351 1352 1352 # tools/bpf/resolve_btfids directory might no 1353 # tools/bpf/resolve_btfids directory might not exist 1353 # in output directory, skip its clean in that 1354 # in output directory, skip its clean in that case 1354 resolve_btfids_clean: 1355 resolve_btfids_clean: 1355 ifneq ($(wildcard $(resolve_btfids_O)),) 1356 ifneq ($(wildcard $(resolve_btfids_O)),) 1356 $(Q)$(MAKE) -sC $(srctree)/tools/bpf/ 1357 $(Q)$(MAKE) -sC $(srctree)/tools/bpf/resolve_btfids O=$(resolve_btfids_O) clean 1357 endif 1358 endif 1358 1359 1359 # Clear a bunch of variables before executing 1360 # Clear a bunch of variables before executing the submake 1360 ifeq ($(quiet),silent_) 1361 ifeq ($(quiet),silent_) 1361 tools_silent=s 1362 tools_silent=s 1362 endif 1363 endif 1363 1364 1364 tools/: FORCE 1365 tools/: FORCE 1365 $(Q)mkdir -p $(objtree)/tools 1366 $(Q)mkdir -p $(objtree)/tools 1366 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too 1367 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(srctree)/tools/ 1367 1368 1368 tools/%: FORCE 1369 tools/%: FORCE 1369 $(Q)mkdir -p $(objtree)/tools 1370 $(Q)mkdir -p $(objtree)/tools 1370 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too 1371 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(srctree)/tools/ $* 1371 1372 1372 # ------------------------------------------- 1373 # --------------------------------------------------------------------------- 1373 # Kernel selftest 1374 # Kernel selftest 1374 1375 1375 PHONY += kselftest 1376 PHONY += kselftest 1376 kselftest: headers !! 1377 kselftest: 1377 $(Q)$(MAKE) -C $(srctree)/tools/testi 1378 $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests run_tests 1378 1379 1379 kselftest-%: headers FORCE !! 1380 kselftest-%: FORCE 1380 $(Q)$(MAKE) -C $(srctree)/tools/testi 1381 $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests $* 1381 1382 1382 PHONY += kselftest-merge 1383 PHONY += kselftest-merge 1383 kselftest-merge: 1384 kselftest-merge: 1384 $(if $(wildcard $(objtree)/.config),, 1385 $(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!)) 1385 $(Q)find $(srctree)/tools/testing/sel !! 1386 $(Q)find $(srctree)/tools/testing/selftests -name config | \ 1386 xargs $(srctree)/scripts/kcon !! 1387 xargs $(srctree)/scripts/kconfig/merge_config.sh -m $(objtree)/.config 1387 $(Q)$(MAKE) -f $(srctree)/Makefile ol 1388 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig 1388 1389 1389 # ------------------------------------------- 1390 # --------------------------------------------------------------------------- 1390 # Devicetree files 1391 # Devicetree files 1391 1392 1392 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/ 1393 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/boot/dts/),) 1393 dtstree := arch/$(SRCARCH)/boot/dts 1394 dtstree := arch/$(SRCARCH)/boot/dts 1394 endif 1395 endif 1395 1396 1396 ifneq ($(dtstree),) 1397 ifneq ($(dtstree),) 1397 1398 1398 %.dtb: dtbs_prepare !! 1399 %.dtb: include/config/kernel.release scripts_dtc 1399 $(Q)$(MAKE) $(build)=$(dtstree) $(dts 1400 $(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@ 1400 1401 1401 %.dtbo: dtbs_prepare !! 1402 %.dtbo: include/config/kernel.release scripts_dtc 1402 $(Q)$(MAKE) $(build)=$(dtstree) $(dts 1403 $(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@ 1403 1404 1404 PHONY += dtbs dtbs_prepare dtbs_install dtbs_ !! 1405 PHONY += dtbs dtbs_install dtbs_check 1405 dtbs: dtbs_prepare !! 1406 dtbs: include/config/kernel.release scripts_dtc 1406 $(Q)$(MAKE) $(build)=$(dtstree) need- !! 1407 $(Q)$(MAKE) $(build)=$(dtstree) 1407 << 1408 # include/config/kernel.release is actually n << 1409 # INSTALL_DTBS_PATH contains $(KERNELRELEASE) << 1410 # dtbs_install depend on it as dtbs_install m << 1411 dtbs_prepare: include/config/kernel.release s << 1412 1408 1413 ifneq ($(filter dtbs_check, $(MAKECMDGOALS)), 1409 ifneq ($(filter dtbs_check, $(MAKECMDGOALS)),) 1414 export CHECK_DTBS=y 1410 export CHECK_DTBS=y 1415 endif !! 1411 dtbs: dt_binding_check 1416 << 1417 ifneq ($(CHECK_DTBS),) << 1418 dtbs_prepare: dt_binding_schemas << 1419 endif 1412 endif 1420 1413 1421 dtbs_check: dtbs 1414 dtbs_check: dtbs 1422 1415 1423 dtbs_install: 1416 dtbs_install: 1424 $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 1417 $(Q)$(MAKE) $(dtbinst)=$(dtstree) dst=$(INSTALL_DTBS_PATH) 1425 1418 1426 ifdef CONFIG_OF_EARLY_FLATTREE 1419 ifdef CONFIG_OF_EARLY_FLATTREE 1427 all: dtbs 1420 all: dtbs 1428 endif 1421 endif 1429 1422 1430 endif 1423 endif 1431 1424 1432 PHONY += scripts_dtc 1425 PHONY += scripts_dtc 1433 scripts_dtc: scripts_basic 1426 scripts_dtc: scripts_basic 1434 $(Q)$(MAKE) $(build)=scripts/dtc 1427 $(Q)$(MAKE) $(build)=scripts/dtc 1435 1428 1436 ifneq ($(filter dt_binding_check, $(MAKECMDGO 1429 ifneq ($(filter dt_binding_check, $(MAKECMDGOALS)),) 1437 export CHECK_DTBS=y !! 1430 export CHECK_DT_BINDING=y 1438 endif 1431 endif 1439 1432 1440 PHONY += dt_binding_check dt_binding_schemas !! 1433 PHONY += dt_binding_check 1441 dt_binding_check: dt_binding_schemas scripts_ !! 1434 dt_binding_check: scripts_dtc 1442 $(Q)$(MAKE) $(build)=Documentation/de << 1443 << 1444 dt_binding_schemas: << 1445 $(Q)$(MAKE) $(build)=Documentation/de 1435 $(Q)$(MAKE) $(build)=Documentation/devicetree/bindings 1446 1436 1447 PHONY += dt_compatible_check << 1448 dt_compatible_check: dt_binding_schemas << 1449 $(Q)$(MAKE) $(build)=Documentation/de << 1450 << 1451 # ------------------------------------------- 1437 # --------------------------------------------------------------------------- 1452 # Modules 1438 # Modules 1453 1439 1454 ifdef CONFIG_MODULES 1440 ifdef CONFIG_MODULES 1455 1441 1456 # By default, build modules as well 1442 # By default, build modules as well 1457 1443 1458 all: modules 1444 all: modules 1459 1445 1460 # When we're building modules with modversion 1446 # When we're building modules with modversions, we need to consider 1461 # the built-in objects during the descend as 1447 # the built-in objects during the descend as well, in order to 1462 # make sure the checksums are up to date befo 1448 # make sure the checksums are up to date before we record them. 1463 ifdef CONFIG_MODVERSIONS 1449 ifdef CONFIG_MODVERSIONS 1464 KBUILD_BUILTIN := 1 1450 KBUILD_BUILTIN := 1 1465 endif 1451 endif 1466 1452 1467 # Build modules 1453 # Build modules 1468 # 1454 # >> 1455 # A module can be listed more than once in obj-m resulting in >> 1456 # duplicate lines in modules.order files. Those are removed >> 1457 # using awk while concatenating to the final file. 1469 1458 1470 # *.ko are usually independent of vmlinux, bu !! 1459 PHONY += modules 1471 # is an exception. !! 1460 modules: $(if $(KBUILD_BUILTIN),vmlinux) modules_check modules_prepare 1472 ifdef CONFIG_DEBUG_INFO_BTF_MODULES << 1473 KBUILD_BUILTIN := 1 << 1474 modules: vmlinux << 1475 endif << 1476 1461 1477 modules: modules_prepare !! 1462 cmd_modules_order = $(AWK) '!x[$$0]++' $(real-prereqs) > $@ >> 1463 >> 1464 modules.order: $(subdir-modorder) FORCE >> 1465 $(call if_changed,modules_order) >> 1466 >> 1467 targets += modules.order 1478 1468 1479 # Target to prepare building external modules 1469 # Target to prepare building external modules >> 1470 PHONY += modules_prepare 1480 modules_prepare: prepare 1471 modules_prepare: prepare 1481 $(Q)$(MAKE) $(build)=scripts scripts/ 1472 $(Q)$(MAKE) $(build)=scripts scripts/module.lds 1482 1473 >> 1474 export modules_sign_only := >> 1475 >> 1476 ifeq ($(CONFIG_MODULE_SIG),y) >> 1477 PHONY += modules_sign >> 1478 modules_sign: modules_install >> 1479 @: >> 1480 >> 1481 # modules_sign is a subset of modules_install. >> 1482 # 'make modules_install modules_sign' is equivalent to 'make modules_install'. >> 1483 ifeq ($(filter modules_install,$(MAKECMDGOALS)),) >> 1484 modules_sign_only := y >> 1485 endif >> 1486 endif >> 1487 >> 1488 modinst_pre := >> 1489 ifneq ($(filter modules_install,$(MAKECMDGOALS)),) >> 1490 modinst_pre := __modinst_pre >> 1491 endif >> 1492 >> 1493 modules_install: $(modinst_pre) >> 1494 PHONY += __modinst_pre >> 1495 __modinst_pre: >> 1496 @rm -rf $(MODLIB)/kernel >> 1497 @rm -f $(MODLIB)/source >> 1498 @mkdir -p $(MODLIB)/kernel >> 1499 @ln -s $(abspath $(srctree)) $(MODLIB)/source >> 1500 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ >> 1501 rm -f $(MODLIB)/build ; \ >> 1502 ln -s $(CURDIR) $(MODLIB)/build ; \ >> 1503 fi >> 1504 @sed 's:^:kernel/:' modules.order > $(MODLIB)/modules.order >> 1505 @cp -f modules.builtin $(MODLIB)/ >> 1506 @cp -f $(objtree)/modules.builtin.modinfo $(MODLIB)/ >> 1507 1483 endif # CONFIG_MODULES 1508 endif # CONFIG_MODULES 1484 1509 1485 ### 1510 ### 1486 # Cleaning is done on three levels. 1511 # Cleaning is done on three levels. 1487 # make clean Delete most generated files 1512 # make clean Delete most generated files 1488 # Leave enough to build extern 1513 # Leave enough to build external modules 1489 # make mrproper Delete the current configura 1514 # make mrproper Delete the current configuration, and all generated files 1490 # make distclean Remove editor backup files, 1515 # make distclean Remove editor backup files, patch leftover files and the like 1491 1516 1492 # Directories & files removed with 'make clea 1517 # Directories & files removed with 'make clean' 1493 CLEAN_FILES += vmlinux.symvers modules-only.s !! 1518 CLEAN_FILES += include/ksym vmlinux.symvers modules-only.symvers \ 1494 modules.builtin modules.builti 1519 modules.builtin modules.builtin.modinfo modules.nsdeps \ 1495 modules.builtin.ranges vmlinux !! 1520 compile_commands.json .thinlto-cache 1496 compile_commands.json rust/tes << 1497 rust-project.json .vmlinux.obj << 1498 1521 1499 # Directories & files removed with 'make mrpr 1522 # Directories & files removed with 'make mrproper' 1500 MRPROPER_FILES += include/config include/gene 1523 MRPROPER_FILES += include/config include/generated \ 1501 arch/$(SRCARCH)/include/gen !! 1524 arch/$(SRCARCH)/include/generated .tmp_objdiff \ 1502 debian snap tar-install PKG !! 1525 debian snap tar-install \ 1503 .config .config.old .versio 1526 .config .config.old .version \ 1504 Module.symvers \ 1527 Module.symvers \ 1505 certs/signing_key.pem \ !! 1528 certs/signing_key.pem certs/signing_key.x509 \ 1506 certs/x509.genkey \ 1529 certs/x509.genkey \ 1507 vmlinux-gdb.py \ 1530 vmlinux-gdb.py \ 1508 rpmbuild \ !! 1531 *.spec 1509 rust/libmacros.so << 1510 1532 1511 # clean - Delete most, but leave enough to bu 1533 # clean - Delete most, but leave enough to build external modules 1512 # 1534 # 1513 clean: private rm-files := $(CLEAN_FILES) !! 1535 clean: rm-files := $(CLEAN_FILES) 1514 1536 1515 PHONY += archclean vmlinuxclean 1537 PHONY += archclean vmlinuxclean 1516 1538 1517 vmlinuxclean: 1539 vmlinuxclean: 1518 $(Q)$(CONFIG_SHELL) $(srctree)/script 1540 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean 1519 $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f 1541 $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) clean) 1520 1542 1521 clean: archclean vmlinuxclean resolve_btfids_ 1543 clean: archclean vmlinuxclean resolve_btfids_clean 1522 1544 1523 # mrproper - Delete all generated files, incl 1545 # mrproper - Delete all generated files, including .config 1524 # 1546 # 1525 mrproper: private rm-files := $(MRPROPER_FILE !! 1547 mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1526 mrproper-dirs := $(addprefix _mrproper_, 1548 mrproper-dirs := $(addprefix _mrproper_,scripts) 1527 1549 1528 PHONY += $(mrproper-dirs) mrproper 1550 PHONY += $(mrproper-dirs) mrproper 1529 $(mrproper-dirs): 1551 $(mrproper-dirs): 1530 $(Q)$(MAKE) $(clean)=$(patsubst _mrpr 1552 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1531 1553 1532 mrproper: clean $(mrproper-dirs) 1554 mrproper: clean $(mrproper-dirs) 1533 $(call cmd,rmfiles) 1555 $(call cmd,rmfiles) 1534 @find . $(RCS_FIND_IGNORE) \ << 1535 \( -name '*.rmeta' \) \ << 1536 -type f -print | xargs rm -f << 1537 1556 1538 # distclean 1557 # distclean 1539 # 1558 # 1540 PHONY += distclean 1559 PHONY += distclean 1541 1560 1542 distclean: mrproper 1561 distclean: mrproper 1543 @find . $(RCS_FIND_IGNORE) \ 1562 @find . $(RCS_FIND_IGNORE) \ 1544 \( -name '*.orig' -o -name '* 1563 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1545 -o -name '*.bak' -o -name '#* 1564 -o -name '*.bak' -o -name '#*#' -o -name '*%' \ 1546 -o -name 'core' -o -name tags 1565 -o -name 'core' -o -name tags -o -name TAGS -o -name 'cscope*' \ 1547 -o -name GPATH -o -name GRTAG 1566 -o -name GPATH -o -name GRTAGS -o -name GSYMS -o -name GTAGS \) \ 1548 -type f -print | xargs rm -f 1567 -type f -print | xargs rm -f 1549 1568 1550 1569 1551 # Packaging of the kernel to various formats 1570 # Packaging of the kernel to various formats 1552 # ------------------------------------------- 1571 # --------------------------------------------------------------------------- 1553 1572 1554 %src-pkg: FORCE 1573 %src-pkg: FORCE 1555 $(Q)$(MAKE) -f $(srctree)/scripts/Mak 1574 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.package $@ 1556 %pkg: include/config/kernel.release FORCE 1575 %pkg: include/config/kernel.release FORCE 1557 $(Q)$(MAKE) -f $(srctree)/scripts/Mak 1576 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.package $@ 1558 1577 1559 # Brief documentation of the typical targets 1578 # Brief documentation of the typical targets used 1560 # ------------------------------------------- 1579 # --------------------------------------------------------------------------- 1561 1580 1562 boards := $(wildcard $(srctree)/arch/$(SRCARC 1581 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) 1563 boards := $(sort $(notdir $(boards))) 1582 boards := $(sort $(notdir $(boards))) 1564 board-dirs := $(dir $(wildcard $(srctree)/arc 1583 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) 1565 board-dirs := $(sort $(notdir $(board-dirs:/= 1584 board-dirs := $(sort $(notdir $(board-dirs:/=))) 1566 1585 1567 PHONY += help 1586 PHONY += help 1568 help: 1587 help: 1569 @echo 'Cleaning targets:' 1588 @echo 'Cleaning targets:' 1570 @echo ' clean - Remove mo 1589 @echo ' clean - Remove most generated files but keep the config and' 1571 @echo ' enough bu 1590 @echo ' enough build support to build external modules' 1572 @echo ' mrproper - Remove al 1591 @echo ' mrproper - Remove all generated files + config + various backup files' 1573 @echo ' distclean - mrproper 1592 @echo ' distclean - mrproper + remove editor backup and patch files' 1574 @echo '' 1593 @echo '' >> 1594 @echo 'Configuration targets:' 1575 @$(MAKE) -f $(srctree)/scripts/kconfi 1595 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1576 @echo '' 1596 @echo '' 1577 @echo 'Other generic targets:' 1597 @echo 'Other generic targets:' 1578 @echo ' all - Build all 1598 @echo ' all - Build all targets marked with [*]' 1579 @echo '* vmlinux - Build the 1599 @echo '* vmlinux - Build the bare kernel' 1580 @echo '* modules - Build all 1600 @echo '* modules - Build all modules' 1581 @echo ' modules_install - Install a 1601 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 1582 @echo ' vdso_install - Install u << 1583 @echo ' dir/ - Build all 1602 @echo ' dir/ - Build all files in dir and below' 1584 @echo ' dir/file.[ois] - Build spe 1603 @echo ' dir/file.[ois] - Build specified target only' 1585 @echo ' dir/file.ll - Build the 1604 @echo ' dir/file.ll - Build the LLVM assembly file' 1586 @echo ' (requires 1605 @echo ' (requires compiler support for LLVM assembly generation)' 1587 @echo ' dir/file.lst - Build spe 1606 @echo ' dir/file.lst - Build specified mixed source/assembly target only' 1588 @echo ' (requires 1607 @echo ' (requires a recent binutils and recent build (System.map))' 1589 @echo ' dir/file.ko - Build mod 1608 @echo ' dir/file.ko - Build module including final link' 1590 @echo ' modules_prepare - Set up fo 1609 @echo ' modules_prepare - Set up for building external modules' 1591 @echo ' tags/TAGS - Generate 1610 @echo ' tags/TAGS - Generate tags file for editors' 1592 @echo ' cscope - Generate 1611 @echo ' cscope - Generate cscope index' 1593 @echo ' gtags - Generate 1612 @echo ' gtags - Generate GNU GLOBAL index' 1594 @echo ' kernelrelease - Output th 1613 @echo ' kernelrelease - Output the release version string (use with make -s)' 1595 @echo ' kernelversion - Output th 1614 @echo ' kernelversion - Output the version stored in Makefile (use with make -s)' 1596 @echo ' image_name - Output th 1615 @echo ' image_name - Output the image name (use with make -s)' 1597 @echo ' headers_install - Install s 1616 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 1598 echo ' (default: 1617 echo ' (default: $(INSTALL_HDR_PATH))'; \ 1599 echo '' 1618 echo '' 1600 @echo 'Static analysers:' 1619 @echo 'Static analysers:' 1601 @echo ' checkstack - Generate !! 1620 @echo ' checkstack - Generate a list of stack hogs' 1602 @echo ' with a st << 1603 @echo ' versioncheck - Sanity ch 1621 @echo ' versioncheck - Sanity check on version.h usage' 1604 @echo ' includecheck - Check for 1622 @echo ' includecheck - Check for duplicate included header files' 1605 @echo ' export_report - List the 1623 @echo ' export_report - List the usages of all exported symbols' 1606 @echo ' headerdep - Detect in 1624 @echo ' headerdep - Detect inclusion cycles in headers' 1607 @echo ' coccicheck - Check wit 1625 @echo ' coccicheck - Check with Coccinelle' 1608 @echo ' clang-analyzer - Check wit 1626 @echo ' clang-analyzer - Check with clang static analyzer' 1609 @echo ' clang-tidy - Check wit 1627 @echo ' clang-tidy - Check with clang-tidy' 1610 @echo '' 1628 @echo '' 1611 @echo 'Tools:' 1629 @echo 'Tools:' 1612 @echo ' nsdeps - Generate 1630 @echo ' nsdeps - Generate missing symbol namespace dependencies' 1613 @echo '' 1631 @echo '' 1614 @echo 'Kernel selftest:' 1632 @echo 'Kernel selftest:' 1615 @echo ' kselftest - Build a 1633 @echo ' kselftest - Build and run kernel selftest' 1616 @echo ' Build, 1634 @echo ' Build, install, and boot kernel before' 1617 @echo ' running 1635 @echo ' running kselftest on it' 1618 @echo ' Run as 1636 @echo ' Run as root for full coverage' 1619 @echo ' kselftest-all - Build k 1637 @echo ' kselftest-all - Build kernel selftest' 1620 @echo ' kselftest-install - Build a 1638 @echo ' kselftest-install - Build and install kernel selftest' 1621 @echo ' kselftest-clean - Remove 1639 @echo ' kselftest-clean - Remove all generated kselftest files' 1622 @echo ' kselftest-merge - Merge a 1640 @echo ' kselftest-merge - Merge all the config dependencies of' 1623 @echo ' kselfte 1641 @echo ' kselftest to existing .config.' 1624 @echo '' 1642 @echo '' 1625 @echo 'Rust targets:' << 1626 @echo ' rustavailable - Checks wh << 1627 @echo ' available << 1628 @echo ' rustfmt - Reformat << 1629 @echo ' rustfmtcheck - Checks if << 1630 @echo ' is format << 1631 @echo ' rustdoc - Generate << 1632 @echo ' (requires << 1633 @echo ' rusttest - Runs the << 1634 @echo ' (requires << 1635 @echo ' rust-analyzer - Generate << 1636 @echo ' (requires << 1637 @echo ' dir/file.[os] - Build spe << 1638 @echo ' dir/file.rsi - Build mac << 1639 @echo ' Run with << 1640 @echo ' The outpu << 1641 @echo ' dir/file.ll - Build the << 1642 @echo '' << 1643 @$(if $(dtstree), \ 1643 @$(if $(dtstree), \ 1644 echo 'Devicetree:'; \ 1644 echo 'Devicetree:'; \ 1645 echo '* dtbs - !! 1645 echo '* dtbs - Build device tree blobs for enabled boards'; \ 1646 echo ' dtbs_install - !! 1646 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'; \ 1647 echo ' dt_binding_check - !! 1647 echo ' dt_binding_check - Validate device tree binding documents'; \ 1648 echo ' dt_binding_schemas - !! 1648 echo ' dtbs_check - Validate device tree source files';\ 1649 echo ' dtbs_check - << 1650 echo '') 1649 echo '') 1651 1650 1652 @echo 'Userspace tools targets:' 1651 @echo 'Userspace tools targets:' 1653 @echo ' use "make tools/help"' 1652 @echo ' use "make tools/help"' 1654 @echo ' or "cd tools; make help"' 1653 @echo ' or "cd tools; make help"' 1655 @echo '' 1654 @echo '' 1656 @echo 'Kernel packaging:' 1655 @echo 'Kernel packaging:' 1657 @$(MAKE) -f $(srctree)/scripts/Makefi 1656 @$(MAKE) -f $(srctree)/scripts/Makefile.package help 1658 @echo '' 1657 @echo '' 1659 @echo 'Documentation targets:' 1658 @echo 'Documentation targets:' 1660 @$(MAKE) -f $(srctree)/Documentation/ 1659 @$(MAKE) -f $(srctree)/Documentation/Makefile dochelp 1661 @echo '' 1660 @echo '' 1662 @echo 'Architecture-specific targets !! 1661 @echo 'Architecture specific targets ($(SRCARCH)):' 1663 @$(or $(archhelp),\ !! 1662 @$(if $(archhelp),$(archhelp),\ 1664 echo ' No architecture-speci !! 1663 echo ' No architecture specific help defined for $(SRCARCH)') 1665 @echo '' 1664 @echo '' 1666 @$(if $(boards), \ 1665 @$(if $(boards), \ 1667 $(foreach b, $(boards), \ 1666 $(foreach b, $(boards), \ 1668 printf " %-27s - Build for % 1667 printf " %-27s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 1669 echo '') 1668 echo '') 1670 @$(if $(board-dirs), \ 1669 @$(if $(board-dirs), \ 1671 $(foreach b, $(board-dirs), \ 1670 $(foreach b, $(board-dirs), \ 1672 printf " %-16s - Show %s-spe 1671 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ 1673 printf " %-16s - Show all of 1672 printf " %-16s - Show all of the above\\n" help-boards; \ 1674 echo '') 1673 echo '') 1675 1674 1676 @echo ' make V=n [targets] 1: ver !! 1675 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1677 @echo ' 2: giv !! 1676 @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 1678 @echo ' V=1 an << 1679 @echo ' make O=dir [targets] Locate 1677 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1680 @echo ' make C=1 [targets] Check 1678 @echo ' make C=1 [targets] Check re-compiled c source with $$CHECK' 1681 @echo ' (spars 1679 @echo ' (sparse by default)' 1682 @echo ' make C=2 [targets] Force 1680 @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1683 @echo ' make RECORDMCOUNT_WARN=1 [t 1681 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' 1684 @echo ' make W=n [targets] Enable !! 1682 @echo ' make W=n [targets] Enable extra build checks, n=1,2,3 where' 1685 @echo ' 1: warnings w 1683 @echo ' 1: warnings which may be relevant and do not occur too often' 1686 @echo ' 2: warnings w 1684 @echo ' 2: warnings which occur quite often but may still be relevant' 1687 @echo ' 3: more obscu 1685 @echo ' 3: more obscure warnings, can most likely be ignored' 1688 @echo ' c: extra chec << 1689 @echo ' e: warnings a << 1690 @echo ' Multiple leve 1686 @echo ' Multiple levels can be combined with W=12 or W=123' 1691 @$(if $(dtstree), \ << 1692 echo ' make CHECK_DTBS=1 [ta << 1693 echo ' This can be ap << 1694 ) << 1695 @echo '' 1687 @echo '' 1696 @echo 'Execute "make" or "make all" 1688 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1697 @echo 'For further info see the ./RE 1689 @echo 'For further info see the ./README file' 1698 1690 1699 1691 1700 help-board-dirs := $(addprefix help-,$(board- 1692 help-board-dirs := $(addprefix help-,$(board-dirs)) 1701 1693 1702 help-boards: $(help-board-dirs) 1694 help-boards: $(help-board-dirs) 1703 1695 1704 boards-per-dir = $(sort $(notdir $(wildcard $ 1696 boards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))) 1705 1697 1706 $(help-board-dirs): help-%: 1698 $(help-board-dirs): help-%: 1707 @echo 'Architecture-specific targets !! 1699 @echo 'Architecture specific targets ($(SRCARCH) $*):' 1708 @$(if $(boards-per-dir), \ 1700 @$(if $(boards-per-dir), \ 1709 $(foreach b, $(boards-per-dir 1701 $(foreach b, $(boards-per-dir), \ 1710 printf " %-24s - Build for % 1702 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ 1711 echo '') 1703 echo '') 1712 1704 1713 1705 1714 # Documentation targets 1706 # Documentation targets 1715 # ------------------------------------------- 1707 # --------------------------------------------------------------------------- 1716 DOC_TARGETS := xmldocs latexdocs pdfdocs html 1708 DOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \ 1717 linkcheckdocs dochelp refcheck !! 1709 linkcheckdocs dochelp refcheckdocs 1718 PHONY += $(DOC_TARGETS) 1710 PHONY += $(DOC_TARGETS) 1719 $(DOC_TARGETS): 1711 $(DOC_TARGETS): 1720 $(Q)$(MAKE) $(build)=Documentation $@ 1712 $(Q)$(MAKE) $(build)=Documentation $@ 1721 1713 1722 << 1723 # Rust targets << 1724 # ------------------------------------------- << 1725 << 1726 # "Is Rust available?" target << 1727 PHONY += rustavailable << 1728 rustavailable: << 1729 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1730 << 1731 # Documentation target << 1732 # << 1733 # Using the singular to avoid running afoul o << 1734 PHONY += rustdoc << 1735 rustdoc: prepare << 1736 $(Q)$(MAKE) $(build)=rust $@ << 1737 << 1738 # Testing target << 1739 PHONY += rusttest << 1740 rusttest: prepare << 1741 $(Q)$(MAKE) $(build)=rust $@ << 1742 << 1743 # Formatting targets << 1744 PHONY += rustfmt rustfmtcheck << 1745 << 1746 # We skip `rust/alloc` since we want to minim << 1747 # << 1748 # We match using absolute paths since `find` << 1749 # when matching, which is a problem when e.g. << 1750 # We `grep` afterwards in order to remove the << 1751 rustfmt: << 1752 $(Q)find $(abs_srctree) -type f -name << 1753 -o -path $(abs_srctree)/rust/ << 1754 -o -path $(abs_objtree)/rust/ << 1755 | grep -Fv $(abs_srctree)/rus << 1756 | grep -Fv $(abs_objtree)/rus << 1757 | grep -Fv generated \ << 1758 | xargs $(RUSTFMT) $(rustfmt_ << 1759 << 1760 rustfmtcheck: rustfmt_flags = --check << 1761 rustfmtcheck: rustfmt << 1762 << 1763 # Misc 1714 # Misc 1764 # ------------------------------------------- 1715 # --------------------------------------------------------------------------- 1765 1716 1766 PHONY += misc-check << 1767 misc-check: << 1768 $(Q)$(srctree)/scripts/misc-check << 1769 << 1770 all: misc-check << 1771 << 1772 PHONY += scripts_gdb 1717 PHONY += scripts_gdb 1773 scripts_gdb: prepare0 1718 scripts_gdb: prepare0 1774 $(Q)$(MAKE) $(build)=scripts/gdb 1719 $(Q)$(MAKE) $(build)=scripts/gdb 1775 $(Q)ln -fsn $(abspath $(srctree)/scri 1720 $(Q)ln -fsn $(abspath $(srctree)/scripts/gdb/vmlinux-gdb.py) 1776 1721 1777 ifdef CONFIG_GDB_SCRIPTS 1722 ifdef CONFIG_GDB_SCRIPTS 1778 all: scripts_gdb 1723 all: scripts_gdb 1779 endif 1724 endif 1780 1725 1781 else # KBUILD_EXTMOD 1726 else # KBUILD_EXTMOD 1782 1727 1783 filechk_kernel.release = echo $(KERNELRELEASE << 1784 << 1785 ### 1728 ### 1786 # External module support. 1729 # External module support. 1787 # When building external modules the kernel u 1730 # When building external modules the kernel used as basis is considered 1788 # read-only, and no consistency checks are ma 1731 # read-only, and no consistency checks are made and the make 1789 # system is not used on the basis kernel. If 1732 # system is not used on the basis kernel. If updates are required 1790 # in the basis kernel ordinary make commands 1733 # in the basis kernel ordinary make commands (without M=...) must be used. 1791 1734 1792 # We are always building only modules. 1735 # We are always building only modules. 1793 KBUILD_BUILTIN := 1736 KBUILD_BUILTIN := 1794 KBUILD_MODULES := 1 1737 KBUILD_MODULES := 1 1795 1738 1796 build-dir := $(KBUILD_EXTMOD) !! 1739 build-dirs := $(KBUILD_EXTMOD) >> 1740 $(MODORDER): descend >> 1741 @: 1797 1742 1798 compile_commands.json: $(extmod_prefix)compil 1743 compile_commands.json: $(extmod_prefix)compile_commands.json 1799 PHONY += compile_commands.json 1744 PHONY += compile_commands.json 1800 1745 1801 clean-dirs := $(KBUILD_EXTMOD) 1746 clean-dirs := $(KBUILD_EXTMOD) 1802 clean: private rm-files := $(KBUILD_EXTMOD)/M !! 1747 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers $(KBUILD_EXTMOD)/modules.nsdeps \ 1803 $(KBUILD_EXTMOD)/compile_commands.jso !! 1748 $(KBUILD_EXTMOD)/compile_commands.json $(KBUILD_EXTMOD)/.thinlto-cache 1804 << 1805 PHONY += prepare << 1806 # now expand this into a simple variable to r << 1807 prepare: CC_VERSION_TEXT := $(CC_VERSION_TEXT << 1808 prepare: << 1809 @if [ "$(CC_VERSION_TEXT)" != "$(CONF << 1810 echo >&2 "warning: the compil << 1811 echo >&2 " The kernel was bu << 1812 echo >&2 " You are using: << 1813 fi << 1814 1749 1815 PHONY += help 1750 PHONY += help 1816 help: 1751 help: 1817 @echo ' Building external modules.' 1752 @echo ' Building external modules.' 1818 @echo ' Syntax: make -C path/to/ker 1753 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 1819 @echo '' 1754 @echo '' 1820 @echo ' modules - default t 1755 @echo ' modules - default target, build the module(s)' 1821 @echo ' modules_install - install t 1756 @echo ' modules_install - install the module' 1822 @echo ' clean - remove ge 1757 @echo ' clean - remove generated files in module directory only' 1823 @echo ' rust-analyzer - generate << 1824 @echo '' 1758 @echo '' 1825 1759 1826 ifndef CONFIG_MODULES !! 1760 # no-op for external module builds 1827 modules modules_install: __external_modules_e !! 1761 PHONY += prepare modules_prepare 1828 __external_modules_error: << 1829 @echo >&2 '***' << 1830 @echo >&2 '*** The present kernel dis << 1831 @echo >&2 '*** You cannot build or in << 1832 @echo >&2 '***' << 1833 @false << 1834 endif << 1835 1762 1836 endif # KBUILD_EXTMOD 1763 endif # KBUILD_EXTMOD 1837 1764 1838 # ------------------------------------------- 1765 # --------------------------------------------------------------------------- 1839 # Modules 1766 # Modules 1840 1767 1841 PHONY += modules modules_install modules_sign !! 1768 PHONY += modules modules_install 1842 << 1843 modules_install: << 1844 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1845 sign-only=$(if $(filter modules_insta << 1846 << 1847 ifeq ($(CONFIG_MODULE_SIG),y) << 1848 # modules_sign is a subset of modules_install << 1849 # 'make modules_install modules_sign' is equi << 1850 modules_sign: modules_install << 1851 @: << 1852 else << 1853 modules_sign: << 1854 @echo >&2 '***' << 1855 @echo >&2 '*** CONFIG_MODULE_SIG is d << 1856 @echo >&2 '***' << 1857 @false << 1858 endif << 1859 1769 1860 ifdef CONFIG_MODULES 1770 ifdef CONFIG_MODULES 1861 1771 1862 $(MODORDER): $(build-dir) !! 1772 modules: modules_check 1863 @: !! 1773 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1864 << 1865 # KBUILD_MODPOST_NOFINAL can be set to skip t << 1866 # This is solely useful to speed up test comp << 1867 modules: modpost << 1868 ifneq ($(KBUILD_MODPOST_NOFINAL),1) << 1869 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1870 endif << 1871 1774 1872 PHONY += modules_check 1775 PHONY += modules_check 1873 modules_check: $(MODORDER) 1776 modules_check: $(MODORDER) 1874 $(Q)$(CONFIG_SHELL) $(srctree)/script 1777 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/modules-check.sh $< 1875 1778 >> 1779 quiet_cmd_depmod = DEPMOD $(MODLIB) >> 1780 cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ >> 1781 $(KERNELRELEASE) >> 1782 >> 1783 modules_install: >> 1784 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst >> 1785 $(call cmd,depmod) >> 1786 1876 else # CONFIG_MODULES 1787 else # CONFIG_MODULES 1877 1788 1878 modules: !! 1789 # Modules not configured 1879 @: !! 1790 # --------------------------------------------------------------------------- 1880 1791 1881 KBUILD_MODULES := !! 1792 modules modules_install: >> 1793 @echo >&2 '***' >> 1794 @echo >&2 '*** The present kernel configuration has modules disabled.' >> 1795 @echo >&2 '*** To use the module feature, please run "make menuconfig" etc.' >> 1796 @echo >&2 '*** to enable CONFIG_MODULES.' >> 1797 @echo >&2 '***' >> 1798 @exit 1 1882 1799 1883 endif # CONFIG_MODULES 1800 endif # CONFIG_MODULES 1884 1801 1885 PHONY += modpost << 1886 modpost: $(if $(single-build),, $(if $(KBUILD << 1887 $(if $(KBUILD_MODULES), modules_chec << 1888 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1889 << 1890 # Single targets 1802 # Single targets 1891 # ------------------------------------------- 1803 # --------------------------------------------------------------------------- 1892 # To build individual files in subdirectories 1804 # To build individual files in subdirectories, you can do like this: 1893 # 1805 # 1894 # make foo/bar/baz.s 1806 # make foo/bar/baz.s 1895 # 1807 # 1896 # The supported suffixes for single-target ar 1808 # The supported suffixes for single-target are listed in 'single-targets' 1897 # 1809 # 1898 # To build only under specific subdirectories 1810 # To build only under specific subdirectories, you can do like this: 1899 # 1811 # 1900 # make foo/bar/baz/ 1812 # make foo/bar/baz/ 1901 1813 1902 ifdef single-build 1814 ifdef single-build 1903 1815 1904 # .ko is special because modpost is needed 1816 # .ko is special because modpost is needed 1905 single-ko := $(sort $(filter %.ko, $(MAKECMDG 1817 single-ko := $(sort $(filter %.ko, $(MAKECMDGOALS))) 1906 single-no-ko := $(filter-out $(single-ko), $( !! 1818 single-no-ko := $(sort $(patsubst %.ko,%.mod, $(MAKECMDGOALS))) 1907 $(foreach x, o mod, $(patsubs << 1908 1819 1909 $(single-ko): single_modules !! 1820 $(single-ko): single_modpost 1910 @: 1821 @: 1911 $(single-no-ko): $(build-dir) !! 1822 $(single-no-ko): descend 1912 @: 1823 @: 1913 1824 1914 # Remove MODORDER when done because it is not !! 1825 ifeq ($(KBUILD_EXTMOD),) 1915 PHONY += single_modules !! 1826 # For the single build of in-tree modules, use a temporary file to avoid 1916 single_modules: $(single-no-ko) modules_prepa !! 1827 # the situation of modules_install installing an invalid modules.order. 1917 $(Q){ $(foreach m, $(single-ko), echo !! 1828 MODORDER := .modules.tmp 1918 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1919 ifneq ($(KBUILD_MODPOST_NOFINAL),1) << 1920 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1921 endif 1829 endif 1922 $(Q)rm -f $(MODORDER) << 1923 1830 1924 single-goals := $(addprefix $(build-dir)/, $( !! 1831 PHONY += single_modpost >> 1832 single_modpost: $(single-no-ko) modules_prepare >> 1833 $(Q){ $(foreach m, $(single-ko), echo $(extmod_prefix)$m;) } > $(MODORDER) >> 1834 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1925 1835 1926 KBUILD_MODULES := 1 1836 KBUILD_MODULES := 1 1927 1837 >> 1838 export KBUILD_SINGLE_TARGETS := $(addprefix $(extmod_prefix), $(single-no-ko)) >> 1839 >> 1840 # trim unrelated directories >> 1841 build-dirs := $(foreach d, $(build-dirs), \ >> 1842 $(if $(filter $(d)/%, $(KBUILD_SINGLE_TARGETS)), $(d))) >> 1843 1928 endif 1844 endif 1929 1845 >> 1846 ifndef CONFIG_MODULES >> 1847 KBUILD_MODULES := >> 1848 endif >> 1849 >> 1850 # Handle descending into subdirectories listed in $(build-dirs) 1930 # Preset locale variables to speed up the bui 1851 # Preset locale variables to speed up the build process. Limit locale 1931 # tweaks to this spot to avoid wrong language 1852 # tweaks to this spot to avoid wrong language settings when running 1932 # make menuconfig etc. 1853 # make menuconfig etc. 1933 # Error messages still appears in the origina 1854 # Error messages still appears in the original language 1934 PHONY += $(build-dir) !! 1855 PHONY += descend $(build-dirs) 1935 $(build-dir): prepare !! 1856 descend: $(build-dirs) 1936 $(Q)$(MAKE) $(build)=$@ need-builtin= !! 1857 $(build-dirs): prepare >> 1858 $(Q)$(MAKE) $(build)=$@ \ >> 1859 single-build=$(if $(filter-out $@/, $(filter $@/%, $(KBUILD_SINGLE_TARGETS))),1) \ >> 1860 need-builtin=1 need-modorder=1 1937 1861 1938 clean-dirs := $(addprefix _clean_, $(clean-di 1862 clean-dirs := $(addprefix _clean_, $(clean-dirs)) 1939 PHONY += $(clean-dirs) clean 1863 PHONY += $(clean-dirs) clean 1940 $(clean-dirs): 1864 $(clean-dirs): 1941 $(Q)$(MAKE) $(clean)=$(patsubst _clea 1865 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1942 1866 1943 clean: $(clean-dirs) 1867 clean: $(clean-dirs) 1944 $(call cmd,rmfiles) 1868 $(call cmd,rmfiles) 1945 @find $(or $(KBUILD_EXTMOD), .) $(RCS !! 1869 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ 1946 \( -name '*.[aios]' -o -name !! 1870 \( -name '*.[aios]' -o -name '*.ko' -o -name '.*.cmd' \ 1947 -o -name '*.ko.*' \ 1871 -o -name '*.ko.*' \ 1948 -o -name '*.dtb' -o -name '*. !! 1872 -o -name '*.dtb' -o -name '*.dtbo' -o -name '*.dtb.S' -o -name '*.dt.yaml' \ 1949 -o -name '*.dtb.S' -o -name ' << 1950 -o -name '*.dt.yaml' -o -name << 1951 -o -name '*.dwo' -o -name '*. 1873 -o -name '*.dwo' -o -name '*.lst' \ 1952 -o -name '*.su' -o -name '*.m 1874 -o -name '*.su' -o -name '*.mod' \ 1953 -o -name '.*.d' -o -name '.*. 1875 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1954 -o -name '*.lex.c' -o -name ' 1876 -o -name '*.lex.c' -o -name '*.tab.[ch]' \ 1955 -o -name '*.asn1.[ch]' \ 1877 -o -name '*.asn1.[ch]' \ 1956 -o -name '*.symtypes' -o -nam 1878 -o -name '*.symtypes' -o -name 'modules.order' \ >> 1879 -o -name '.tmp_*.o.*' \ 1957 -o -name '*.c.[012]*.*' \ 1880 -o -name '*.c.[012]*.*' \ 1958 -o -name '*.ll' \ 1881 -o -name '*.ll' \ 1959 -o -name '*.gcno' \ 1882 -o -name '*.gcno' \ 1960 \) -type f -print \ !! 1883 -o -name '*.*.symversions' \) -type f -print | xargs rm -f 1961 -o -name '.tmp_*' -print \ << 1962 | xargs rm -rf << 1963 1884 1964 # Generate tags for editors 1885 # Generate tags for editors 1965 # ------------------------------------------- 1886 # --------------------------------------------------------------------------- 1966 quiet_cmd_tags = GEN $@ 1887 quiet_cmd_tags = GEN $@ 1967 cmd_tags = $(BASH) $(srctree)/scripts/t 1888 cmd_tags = $(BASH) $(srctree)/scripts/tags.sh $@ 1968 1889 1969 tags TAGS cscope gtags: FORCE 1890 tags TAGS cscope gtags: FORCE 1970 $(call cmd,tags) 1891 $(call cmd,tags) 1971 1892 1972 # Generate rust-project.json (a file that des << 1973 # Rust projects) for rust-analyzer (an implem << 1974 # Protocol). << 1975 PHONY += rust-analyzer << 1976 rust-analyzer: << 1977 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1978 $(Q)$(MAKE) $(build)=rust $@ << 1979 << 1980 # Script to generate missing namespace depend 1893 # Script to generate missing namespace dependencies 1981 # ------------------------------------------- 1894 # --------------------------------------------------------------------------- 1982 1895 1983 PHONY += nsdeps 1896 PHONY += nsdeps 1984 nsdeps: export KBUILD_NSDEPS=1 1897 nsdeps: export KBUILD_NSDEPS=1 1985 nsdeps: modules 1898 nsdeps: modules 1986 $(Q)$(CONFIG_SHELL) $(srctree)/script 1899 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/nsdeps 1987 1900 1988 # Clang Tooling 1901 # Clang Tooling 1989 # ------------------------------------------- 1902 # --------------------------------------------------------------------------- 1990 1903 1991 quiet_cmd_gen_compile_commands = GEN $@ 1904 quiet_cmd_gen_compile_commands = GEN $@ 1992 cmd_gen_compile_commands = $(PYTHON3) $ 1905 cmd_gen_compile_commands = $(PYTHON3) $< -a $(AR) -o $@ $(filter-out $<, $(real-prereqs)) 1993 1906 1994 $(extmod_prefix)compile_commands.json: $(srct !! 1907 $(extmod_prefix)compile_commands.json: scripts/clang-tools/gen_compile_commands.py \ 1995 $(if $(KBUILD_EXTMOD),, vmlinux.a $(K !! 1908 $(if $(KBUILD_EXTMOD),,$(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS)) \ 1996 $(if $(CONFIG_MODULES), $(MODORDER)) 1909 $(if $(CONFIG_MODULES), $(MODORDER)) FORCE 1997 $(call if_changed,gen_compile_command 1910 $(call if_changed,gen_compile_commands) 1998 1911 1999 targets += $(extmod_prefix)compile_commands.j 1912 targets += $(extmod_prefix)compile_commands.json 2000 1913 2001 PHONY += clang-tidy clang-analyzer 1914 PHONY += clang-tidy clang-analyzer 2002 1915 2003 ifdef CONFIG_CC_IS_CLANG 1916 ifdef CONFIG_CC_IS_CLANG 2004 quiet_cmd_clang_tools = CHECK $< 1917 quiet_cmd_clang_tools = CHECK $< 2005 cmd_clang_tools = $(PYTHON3) $(srctree) 1918 cmd_clang_tools = $(PYTHON3) $(srctree)/scripts/clang-tools/run-clang-tools.py $@ $< 2006 1919 2007 clang-tidy clang-analyzer: $(extmod_prefix)co 1920 clang-tidy clang-analyzer: $(extmod_prefix)compile_commands.json 2008 $(call cmd,clang_tools) 1921 $(call cmd,clang_tools) 2009 else 1922 else 2010 clang-tidy clang-analyzer: 1923 clang-tidy clang-analyzer: 2011 @echo "$@ requires CC=clang" >&2 1924 @echo "$@ requires CC=clang" >&2 2012 @false 1925 @false 2013 endif 1926 endif 2014 1927 2015 # Scripts to check various things for consist 1928 # Scripts to check various things for consistency 2016 # ------------------------------------------- 1929 # --------------------------------------------------------------------------- 2017 1930 2018 PHONY += includecheck versioncheck coccicheck 1931 PHONY += includecheck versioncheck coccicheck export_report 2019 1932 2020 includecheck: 1933 includecheck: 2021 find $(srctree)/* $(RCS_FIND_IGNORE) 1934 find $(srctree)/* $(RCS_FIND_IGNORE) \ 2022 -name '*.[hcS]' -type f -prin 1935 -name '*.[hcS]' -type f -print | sort \ 2023 | xargs $(PERL) -w $(srctree) 1936 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl 2024 1937 2025 versioncheck: 1938 versioncheck: 2026 find $(srctree)/* $(RCS_FIND_IGNORE) 1939 find $(srctree)/* $(RCS_FIND_IGNORE) \ 2027 -name '*.[hcS]' -type f -prin 1940 -name '*.[hcS]' -type f -print | sort \ 2028 | xargs $(PERL) -w $(srctree) 1941 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl 2029 1942 2030 coccicheck: 1943 coccicheck: 2031 $(Q)$(BASH) $(srctree)/scripts/$@ 1944 $(Q)$(BASH) $(srctree)/scripts/$@ 2032 1945 2033 export_report: 1946 export_report: 2034 $(PERL) $(srctree)/scripts/export_rep 1947 $(PERL) $(srctree)/scripts/export_report.pl 2035 1948 2036 PHONY += checkstack kernelrelease kernelversi 1949 PHONY += checkstack kernelrelease kernelversion image_name 2037 1950 2038 # UML needs a little special treatment here. 1951 # UML needs a little special treatment here. It wants to use the host 2039 # toolchain, so needs $(SUBARCH) passed to ch 1952 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone 2040 # else wants $(ARCH), including people doing 1953 # else wants $(ARCH), including people doing cross-builds, which means 2041 # that $(SUBARCH) doesn't work here. 1954 # that $(SUBARCH) doesn't work here. 2042 ifeq ($(ARCH), um) 1955 ifeq ($(ARCH), um) 2043 CHECKSTACK_ARCH := $(SUBARCH) 1956 CHECKSTACK_ARCH := $(SUBARCH) 2044 else 1957 else 2045 CHECKSTACK_ARCH := $(ARCH) 1958 CHECKSTACK_ARCH := $(ARCH) 2046 endif 1959 endif 2047 MINSTACKSIZE ?= 100 << 2048 checkstack: 1960 checkstack: 2049 $(OBJDUMP) -d vmlinux $$(find . -name 1961 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 2050 $(PERL) $(srctree)/scripts/checkstack !! 1962 $(PERL) $(srctree)/scripts/checkstack.pl $(CHECKSTACK_ARCH) 2051 1963 2052 kernelrelease: 1964 kernelrelease: 2053 @$(filechk_kernel.release) !! 1965 @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 2054 1966 2055 kernelversion: 1967 kernelversion: 2056 @echo $(KERNELVERSION) 1968 @echo $(KERNELVERSION) 2057 1969 2058 image_name: 1970 image_name: 2059 @echo $(KBUILD_IMAGE) 1971 @echo $(KBUILD_IMAGE) 2060 << 2061 PHONY += run-command << 2062 run-command: << 2063 $(Q)$(KBUILD_RUN_COMMAND) << 2064 1972 2065 quiet_cmd_rmfiles = $(if $(wildcard $(rm-file 1973 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 2066 cmd_rmfiles = rm -rf $(rm-files) 1974 cmd_rmfiles = rm -rf $(rm-files) 2067 1975 2068 # read saved command lines for existing targe 1976 # read saved command lines for existing targets 2069 existing-targets := $(wildcard $(sort $(targe 1977 existing-targets := $(wildcard $(sort $(targets))) 2070 1978 2071 -include $(foreach f,$(existing-targets),$(di 1979 -include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd) 2072 1980 2073 endif # config-build 1981 endif # config-build 2074 endif # mixed-build 1982 endif # mixed-build 2075 endif # need-sub-make 1983 endif # need-sub-make 2076 1984 2077 PHONY += FORCE 1985 PHONY += FORCE 2078 FORCE: 1986 FORCE: 2079 1987 2080 # Declare the contents of the PHONY variable 1988 # Declare the contents of the PHONY variable as phony. We keep that 2081 # information in a variable so we can use it 1989 # information in a variable so we can use it in if_changed and friends. 2082 .PHONY: $(PHONY) 1990 .PHONY: $(PHONY)
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